Alot of Christians (not all) feel there as to be a show.  They are christian so therefore they feel there is a certain way to act and be.  whether it be in just public or in private life as well.  It is difficult to go to church and try to get right with god.  They see your faults and you feel as though they are looking down on you.  There are quite a few of them out there.  However I know that there are plenty who are not.  from my experience there is a face they where.  to show sinners the way to be. (though it doesnt actually work this way) my advice is to try to find a church or a christian group which you feel comfortable with and try to grow and learn with them,  as i said they arent all like that some times you just need to sift through the mess to find them.