That wasn't quite what I was asking.  Let me try to better explain:  I don't expect that christians should agree, (though, if god were real and really told people things, they ought to).  What I am exploring is the nature of faith and what you think about it.  I'm asking why you think faith is sufficient, when obviously people have faith in things that can't be true?  
That thing you posted appears to criticize your fellow christians: saying that their faith is somehow not real.  They are just being mindless, and blindly accepting what they are told, and you are somehow better.  Is that so?  Are you really putting yourself above your fellow christians?  
I was a christian once.  I really believed, and now that I don't, I still don't feel comfortable insulting the faith of believers, because I know what it is like.  I know there are some christians who don't believe, I know because I've met them and they told me so.  I have frequently made remarks as to the specific 'beliefs' of christians, in that I don't think that adherence to specific doctrines is common or necessary to the religious life.  But I don't question that believers believe in something, sincerely.  Whether it is in the actual scriptures as people say or just the group, which is what I think is more likely, I don't doubt their sincerity.  
It seems that in order to build a wall between you and the less reasonable christians, you have to doubt them, and the sincerity of their faith.  Is this so?