My thoughts are you have confused Christianity with christendom.
Christendom is a counterfeit, hypocritical abomination.
It is the one that upholds the idea of believing for no good reason.
Christianity, on the other hand, states that faith FOLLOWS.....
What does it follow?
It follows the research of, the study of, the learning of, the reasoning upon, the meditation of the subject.
A fellow jumps 16 buses with his motorcycle.
Does he just go out and say: ".....duh, I think I can do it."
He researches the subject, analyzes the situation, takes measurements and makes small tests.
THEN he has conviction!