Nullifidian, as I said, you can make the case against religious truth. That's fine.
You do make a lot of assumptions about how one arrives at belief. As for brainwashing and the like, no, I wouldn't call it that in my case. Rather, I came to Christianity in college. It took several years of study of history, theology, cosmology, and science, but I arrived.
I'll agree that when one starts taking a book or what have you be a literal truth and infallible in everyway, that problems can arise. Indeed, that faith in that book can border on idolatry.
It is also true that reason can only take you so far. There comes a point when one must trust faith, or one must choose to walk away. I have personally reached what I consider to be a strong faith. I do believe in the spiritual, and I have benefitted greatly from my spiritual experiences and the lifestyle that this entails.
As for demanding complete dedication and inerrancy, I'm a Presbyterian. Nothing of the sort is demanded. I'm not so sure that's the message Christianty presents, anyway. Mother Theresa even had doubts. Everyone does. But IMHO, faith when reached and explored is stronger than doubt. You mention complete dedication, but Christianity is really the only major religion where one is not personally responsible for acting to ensure one's salvation. This is particularly true of Protestants, who believe that only by faith alone and by God's grace and love may one be saved. Complete adherence is seen as impossible, and as Luther put, while there is a great burden to bear in needing to improve one's self, the chains fell away upon this realization that Christ granted freedom from the utlimate and unfulfillable burden of the law.
You mention suicide cults and Islamic suicide bombers. Just FYI, suicide was considered a great sin in Judaism, tantamount to murder. One's soul was not one's to take. It's a reason you never hear of such practices as flagillation and extreme monasticism that you see in later-Christian and Buddhist observance: injuring one's self intentionally was seen as sinful. There wasn't the same mentality of dying for a cause that you see develop in other cultures.
Extremely devout dedication to a religion is a clear sign of insanity.
Maybe try reading the works of Thomas Merton and see if you reach that same conclusion. Suffice it to say that I also don't consider men like St. Paul or St. Peter to be wackos, either.
But I'll let it be, and bow out of this discussion. This has drifted off course.