No religion except (insert live or dead religion of your choice here) is based on (the Holy Books of your selected religion).
Also, Christianity believes in a God that is living, whereas many of the others believe in dead people. What kind of faith believes in a dead person?
Also, (insert an important belief of your religion or sect here), whereas many of the others believe something different. What kind of faith believes (insert the beliefs of someone else's religion here, or even the beliefs of another sect of your own religion)?
Do you get the point? Every religious adherent could say essentially the same things about their religion as you have to say about yours.
Down through the millenia untold billions have believed just as fervently in their stories of divine creation and destruction as you do. They were just as certain of their correctness. Logically almost everyone with religious faith down through the ages is definitely deluded, yet they are and have been just as certain as you, in their billions.
How do you determine which history book is correct? How do you determine who is telling the truth in the 9/11 commission? How do you determine which scientific theory is the right one? Everyone has the ability to reject what they consider to be false. Everyone does this every day. So don't make this out to be that religion is the only case where this happens.