The majority of muslims beleive that Islam is the truth, not due to encounters with God, or any logical understanding, but because they are told that it is, and are told not to argue, in many muslims states you can be beaten for questioning Islam. In western countries it is still the case that they are convinced by other people that it is the truth. Then they are told that all non-muslims need to become muslims or die, and that this is the truth, and that they must no question it. They are tricked and or forced into beleiving a fake religion, they are then told that terrorism as it's often called is their duty, and their ticket to paradise. They are told that it is good. They are left with almost no choose. It is not their fault, I struggle even to blame the people that indoctrinate them, as they too were in turn indoctrinated, in the end, it can be traced back, the only people ultiamtely at fault could be said to be muhammed and his close followers, however, I would personally not beleive that it was really their fault either, my personal belief is that they were either tricked or fully controlled by satan.
You can say all you like about choice, but to them there isn't really a choice, it's laid out to them as what they must do. They follow it blindly as they are taught to, I feel great pity for them, and sorrow, if there was anything I personally could do to end Islam, short of killing all muslims, I would do it, even if it cost me my own life. Islam is evil. I will fight evil with everything I have. I will not go around killing the poor slaves of evil who do not understand the truth, who have had the truth hidden from them.