I understand what you're talking about, and I don't disagree with you.
I can't speak to what is going on in every other Christian's life in regard to their own faith, but I can speak for myself.
I wish I was better, and I know the example and commands of Jesus are worth striving for, even when I fall short.
Sure, I think a lot of it can be worthwhile, if we don't take it as an "all or nothing" type of religious monolithic belief that tends to dominate the fundamentalist churches today.
I don't disagree that a certain perspective and execution of Christian ideals as an existential philosophy can be beneficial for those who may see need in that. So I wouldn't take anything away from individuals who existentially pursue the higher bar ideals that I would see value in.
I don't think it's an accurate example, but it's a relevant one.
I'm not really a follower of NLP, but I've heard a story from Richard Bandler about his alternative methods about dealing with mental illness. He described a case where a guy was locked up in psychiatry clinic because he would see Satan everywhere and it terrified him.
So, Bandler tried something. He got a camera and a projector and some smoke machines, and projected an image outside of the window of him dressed up as a Satan. And he said to the guy that he'll leave him alone if, and only if he will follow every word of the book that he will leave on his table. That he must study it and follow every rule.
And he left a sales manual to some commission-based sales company. The story goes that the guy got better and became the top salesman in that company. I don't know if the story is true or not, but if it is... I do see value in Bandler's technique, even though it's a form of replacing one delusion with other one.
I'm not claiming certainty in knowing that Christianity is a delusion, but if it is... I'd rather for it's practitioners demonstrate the positive traits of such false belief, in which case it would be much more justifiable than abrasive rhetoric that tends to follow the lines of Christian fundamentalism.