The OP is extremely loaded. You clearly have issues with Christianity, and sound closed to the idea of others finding lasting merit in what you have imperially dismissed as tripe.
The definition of faith is hoping or believing in that which is unseen or not yet manifest. Faith doesn't need hard proof, it isn't a science, and it's not "irrational" in the sense of hysterics. A more apt word would be "illogical".
Believing in a better tomorrow, believing in the goodness of humanity, believing in the spiritual aspect of life and the miracle of our world and our bodies is in itself faith. I believe very strongly in God, in the existence of souls and their marks on the world even when their bodies are long gone in the dust, in good and evil. This does not make me hysterical, unthinking, strict or confining. Faith is like seeing the "not" or "and" in the problem, the gap, the void or blank space where something should be, like dark matter. You know it's there, and yet it has no name, no shape, no direct method of detection, and its influence is felt on everything. Even gravity is considered an "imaginary" or vaguely unanswerable force.
People who use religion - ANY belief system whatsoever - to corral, cage, cow, hamper, terrify or neglect is NOT, to me, something spiritual, but more what is called "the letter of the law" and not the spirit at all.
I don't know anything for certain, I don't know ultimate outcomes, I refuse to live my life in fear, and yes, I believe in a personal God that I can't always explain or even fully understand. I weigh my faith against the things I see and hear as proofs, I also take into account that some things cannot and will not ever be explained, I feel the numinous presence of the departed.
There is the "god spot" in the brain. There is a real faith. The balance must be struck by those who care to approach both. A critical understanding is needed regardless of what I think about God or Allah or anyone else for that matter.
I have a religious ENTP friend very close to me that makes me look like a woad-smeared heathen. It's not about type. (AGAIN)