Indeed. One of the huge questions that gets lost and forgotten among far more trivial ones. Why, for example, would God choose not to have Prophets among, and reveal the same book in, several cultures? If the Qur'an emerged independently in say the Middle East, Europe, China and India (obviously in the appropriate language) I'd be convinced.
I don't think you would be convinced at all, most likely you would be coming up with more ways to tell God how to run things.
You and others have seen enough similarities between Judaism, Christianity and Islam, and yet you don't believe in any of them.
If the Quran did indeed appear in all these places, you and others like you would most likely just claim that they copied each other or come up with some other excuse.
Indeed, why would any omnipotent entity need a method of communication as crude as a book or indeed a human Prophet?
KAding,
All these 'why' questions get us no where - why did God send a book, why did God create us at all? Why this, why that... don't you think we know that God could have done it any way He wanted, but this is what He choose, and that is good enough for us. We know better than to think our human wisdom is anywhere near that of Gods.
On a more practical level, I always found the "there is no compulsion in religion" and Islamic rules on apostasy to be in contradiction.
It isn't a contradiction - the verse means there is no compulsion to enter Islam.
Muslims say, the Quaran is the perfect book. But how comes, more than half of the population do not find this book perfect? If God created humans and the perfect book, shouldn't not ALL humans have the same opinion ?
Firstly, because they haven't read it. Secondly, because they haven't read it in Arabic. Thirdly, not all hearts will be open to the truth.
I can speak to the general contradiction of the idea of a holy book though. If an all powerful God wished to be known, that God would be known. There would be no need for midlemen or messengers such as prophets or holy books.
You're assumption is wrong. You are assuming that God wanted to prove beyond doubt, 100%, clear as day, that He exists to His creation, and that the only way He could do that was by sending a book...
The fact that He sent Messenger and Holy Books just goes to show that what you claim is His wish was not His wish at all (at least not in the sense that His aim was to make it impossible to refute that He existed).