(In my opinion feel free to disagree)No, technically religion is irrational, because it has no basis or legitimacy, it is simply a possible scenario leading to our creation that is spread and somehow becomes common belief I mean look at scientology IT WAS A F***ING SCI-FI BOOK, and then the worst sci-fi movie of all time.
I have a better question, why is humanity so insistent on it's origins or past, like constantly fighting over believed past occurences, hate over wars led by people LONG dead, why is the past such a... fuse to violence or hate, and Why? why do we NEED to know how old the planet is? How long ago we existed? The time before we existed technically has no relevance to us. I mean I understand wanting to remember occurences like wars so we remember what came of it, death, destruction, despair, so that we learn not to do it, but why do we start new wars because of battles or insults between long dead people?