Greetings and peace be with you cooterhein;
Give unto Caesar what belongs to Caesar, and give unto God, what belongs to God. You would expect Muslims to live under British rule whilst living in Britain, so why would you object to living under Sharia law if you lived in a Muslim country? If you don't break their laws, then you would be ok.
In the spirit of praying for justice for all people
Eric
Several reasons.
1) In a Muslim country that has Shariah law that's enforced on everyone (and I know not all of them do), I wouldn't be super welcome there for a number of reasons, not least of which is that as a Christian, it's rather important to me that I evangelize and at least present the opportunity for people to leave whatever religion or non-religion it is that they currently belong to and become a Christian. This is a rather central tenet of Christianity, especially for the particular strand of Christianity to which I belong with is Evangelical. It's no coincidence that evangelism is emphasized to a rather large degree. By way of comparison, Muslims- although they may not feel as welcome as they could be in the West- are perfectly free to invite people to come to mosque, their mosques are free to publicly display whatever it is they want to pertaining to their religion, and in Western countries, you won't be told that you should be satisfied to practice your religion in your home and grit your teeth through a slew of restrictions in public places, all while being told that you are expected to say "thank you" for having the right to have a minority religion that is in effect a bit of a secret.
2) Shariah law is believed by many Muslims to be divine in origin and perfect, and in countries where Shariah law is the only law, that is absolutely believed to be the case by at least two thirds of the population in every example. Such a legal system- especially as it pertains to someone outside the religion, although it is still applied to me- is obviously rather immune to change, to reform, to improvement. Why improve on perfection, and who is this unbeliever to answer back to God and question His will? That's what we're looking at, and that's a huge problem. I happen to be a proponent of natural law, in a certain sense, not in the exact way that Aquinas envisioned it but in a more evolved post-Enlightenment sort of way. You can read up on some of the gory details here.
http://plato.stanford.edu/entries/natural-law-theories/
In any event, two of the best things about the core concepts of natural law are as follows. For one, for laws to be just they must be equally applied to everyone and this application must be just and fair in all cases and to all concerned. Shariah law completely dismisses that, as it is clearly intended at all stages to favor Muslims and screw over non Muslims. I don't like being screwed. If you come to the West, you probably miss being shown blatantly obvious favoritism at all times, but instead of that you are treated fairly and equally before the law as compared to all other religions and that is decidedly different from getting screwed.
A second core principle of natural law has to do with the very nature of what it is. Natural law is conceived of as an unwritten law that exists independent of any actual laws, something of a hypothetically perfect law, to the extent that a perfect legal code can be accurately surmised. What's great about it though, is that it puts you in a position where existing laws are up for review, and if they are bad then they should change. What that means is the West is constantly looking for things that could be improved in its legal system and tinkers with it in order to make it better. Under Shariah law, however, there is no improving and no tinkering because Shariah is presumed to be perfect already. The thing is though, it's not, especially in terms of the way non Muslims are mistreated. It violates natural law and flagrantly so, at its very core, and by design, it is impervious to the criticism that it so richly deserves. That's what it feels like when I am approaching Islamic law, whereas you get to approach the laws of the West and make some specific suggestions for potential changes, and the West says you may have a good point there, let's examine that and see what we can really do.
Are you beginning to notice that I have some real things to complain about, while you really don't? Maybe that's why I complain, and you don't.
3) I acknowledge that God created laws, I just don't think he ever told Mohammed about them and to whatever extent Islamic law really is God's law (meh), God did not intend for religious law to be enforced on nation states as a matter of common law. Divine Law, as I have repeatedly stated in previous posts, is supposed to be optional in this life and to only be enforced after death, by God, who is the judge. There is not supposed to be compulsion in religion, Muslims at least know that talking point, what you don't seem to understand is that Laws, when they are enforced, are the most basic and common means of compulsion in the history of humanity. Therefore, to whatever extent Any religious law is enforced, and to whatever extent punishments are meted out by religious law enforcement, that is the extent to which there is compulsion in your religion. And there is quite a lot of that in Islam, more so than in any other religion if I may say so. If you think about it, the vast majority of Muslims practice Islam because they were raised in a Muslim family. And then, once they reach adulthood and if they live in a country where Shariah is their law, they are not allowed to leave Islam. They will be punished, and if they speak out against Islam in a public way they will most likely be killed. If you can't see that as a prime example of compulsion then I don't know what it will take. Shariah, when enforced on a society as its law, is basically just compulsory Islam and beyond the life and death business, all manner of other Islamic laws must be followed or violators will be punished in some way. (Not death of course, usually not, but there are punishments for hundreds of different things all pertaining to Islamic law). It is just overwhelming compulsion of a specifically religious variety, and the very thing that so many Muslims look to as the perfect way for Muslims to order their societies is also the perfect example of pure, unadulterated, overwhelming compulsion in their own religion. This should be rather obvious, and I honestly don't know how in the world anyone can read this, think about it for a second, and just not see it. It absolutely boggles my mind.
Shariah is just awful, especially for a non Muslim or for anyone who might even consider leaving Islam (and anyone else that Shariah deems worthy of mistreatment). The West, on the other hand, is not awful for non Westerners and from a legal standpoint, it's as good to Muslims as anyone else. There are some cultural tendencies that are certainly worth complaining about, and the legal system does have its flaws, but we are working on that and unless your favorite Shariah-governed country is working on being secular, Muslims are absolutely not working on improving anything where I am concerned. You have very little to complain about as a Muslim in the West, but I do have all sorts of very good reasons to complain about Shariah law on a very fundamental level.
Thank you for asking, and I certainly don't mind going into detail.