2 Answers

AldeWicht answered the question quite well, and I would like to say that all or nearly all other religeons provide similar truths, meanings and facts. Belief is the acceptance of an expressed viewpoint as true. Thereafter the mind will seek to preserve the “believed” content by interpreting everything based on that belief. Belief holds and protects the subject matter as if it is more important and significant than anything else in the universe. "Without this little candle in the darkness of the world, all would be lost forever…but by it I am saved.” Obviously beliefs are difficult to explore or  adjust. Which is why we should all explore all beliefs and choose for ourselves what we accept as true. I have done this for myself and I am so happy to be so remarkably free.    

Answer

Truth acts as a most powerful glue in all cases. Islam glues everyone to itself to those who take interest in knowing the reality of life and of this world. i.e Who created this universe with extra-ordinary balances, Who is God?, Why is man here on earth? How can sufferings be removed from the whole world?

Islam attracts the attention of many people as it provides straightforward answers to the meaning of why we are here on Earth - to prove ourselves worthy of the rewards of the afterlife or passage into heaven.

Muslims who follow the Q'uran should be respectful of all people, regardless of race, gender or even religion. In this way, Islam is different from many religions, as they are not to judge people for their choice of religion.

The Q'uran says that Allah (God) also created all religions before Islam (Christianity, Judaism etc) but that the holy books of these religions had been changed by Man for their own purposes. This explains that all religions have the same basis, but that Islam is the most recent and accurate as the true word of God.

Thus, the Q'uran, as the most recently written holy book, was said by Allah to be believed as the true word of God, and that anyone who changed the wording would suffer torment in the afterlife. The Q'uran has not been changed since it was written and many non-arab Muslims learn to read Arabic in order to read the Q'uran.

Islam is appealing to many people as its holy book, the Q'uran, has been unchanged since it was written, it contains refernces to many scientific discoveries which were made years after the Q'uran was written (which helps to prove its accuracy/believability), and contains scripture which is based around guiding Muslims to be truly good, respectful people.