I have absolutely no desire to question Allah or his rationale for what he believes is fair and just.
In that case, you are doing it unwittingly. :)
However I do question what some people have to say about the perspective of Allah. This is what my argument is about. I think many people are too quick to judge and too quick to dismiss other people from being accepted by Allah.
I think there is some confusion you have on this aspect. People who do not accept Islam will not be granted paradise - this is not something people are insisting upon themselves, rather Allah has quite clearly mentioned in the Quraan:
Whoever seeks a religion other than Islam will never have it accepted from him, and shall be of those who have truly failed in the next life. [3:85]
People can discuss and come up with their own opinions all they want but the above is pretty clear cut. No?
Why do some Muslims suddenly think that while we have been told to respect them, we ultimately feel that they will burn in hell once they are dead. I don't understand how people could think this way. To be respectful with them but ultimately condemn them to eternal hell fire in their minds.
I think your word 'condemn' is a little unwarranted and unfair to believe. I as a Muslim don't have the ability to condemn anyone to hell. I don't even know my final destination. No Muslim should be condemning anyone to hell as they have no authority whatsoever to do so. For one thing, until they are alive, there is always a chance they could accept Islam and conversely, until we are alive, we could end up losing our faith. So, faith is something that should never be taken for granted. Anyone who does so is being prideful and arrogant. These are attitudes vehemently disliked by Allah. A person with even an atom's worth of pride will not enter heaven, as has been revealed.
Let me give you an analogy to think about. Let's say your best friend leads a life of crime. You wish him the best, you advise him a number of times but he carries on regardless. Would you be wrong if you thought to yourself: 'the path he is on currently is wrong and may ultimately lead him to a life sentence in jail'.
Of course not. Just by you thinking this does not mean you are directly wishing him to be in jail. It's just a conclusion that you have derived based on the present circumstance. This is similar to if a Muslim were to think his non-Muslim friend is going to end up in hell if he doesn't accept Islam before his death.
I do believe Allah is Just. I don't believe Allah will put an unreasonable challenge out there. However the point you have made is highly disputable. Whether people believe in this message or not depends on their level of exposure to the religion, and the attachment they may have already to their own religion. We have to consider people have different levels of intellect so some people may get a better grasp of the message while others may not.
However a more concrete objection to what you've just said can be found within the Muslim population in the world today. I think it would be absolutely ridiculous for me to go up to a non Muslim today and say "Hey, become a Muslim, its crystal clear what you need to do". Look at the number of sects within Islam that exist today? We have what...over 70 different ways of practicing Islam? There was one way to practice Islam back when the Prophet (Pbuh) was alive. However people over time have managed to break down the clarity that Islam represented then into a massive puzzle today. Even if someone was to convert to Islam, which sect should they join? Who is practicing Islam the way it is supposed to be practiced? I would argue that if Muslims are confused about the correct way to practice our own religion then it is highly hypocritical to say what you have just said to a non-Muslim.
Allah says guidance is in his hands. We can just pass on the message (our duty to do so, in fact) but it is not in our ability to
give them faith. Some people are less prone toward acceptance and others are more readily accepting. It's not so much related to intellect but rather purity of heart, sincerity and intention. An unbiased clear minded sincere person would readily be able to deduce the truth when presented by it
by the blessing of Allah whereas an egotistic person who has many bad character traits may find it much much more difficult to let go (if at all) of his preconceived notions and accept faith.
There are many millions of people throughout history and numerous thousands living currently who have accepted Islam despite the different sects out there. If they can do it, there is no reason to think others can't. That's unwarranted pessimism. It's just an excuse, actually.
I will say though that a person who has a sincere heart and seeks Allah's guidance, he will be guided as is the promise of Allah. We are told that if we go walking toward him, he comes running toward us. Any non-muslim who wholeheartedly desires guidance and becomes a Muslim will be guided to the correct path.
May I ask about your history? Were you born a Muslim? Have you studied all of the other religions in the same depth as you have studied Islam?
I was born Muslim and have not studied other religions to the depth that I have studied Islam. If the point you are trying to make is that there are many non-Muslims out there who don't study Islam to the level that they study their own religion and ergo they are unlikely to become Muslim, then I again tell you that you are unwittingly calling into question Allah's justice, as he (not me, not you, not anyone else) has made
clear in the Quraan that no other religion apart from Islam will be accepted from us (the exception being someone who has not heard the message or possibly heard it in a very distorted manner).