There are many things that provide comfort for people. Drug/Alcohol use, literature etc. Fandoms are just... weird, and religion is the oldest and most mature category of fandoms.
The Bible "has been tainted by men" because it's a construct and story written by men, it's always been that.
We don't worship George Lucas today, but maybe in a thousand years we'll worship Geo Luca and the virgin birth of Anak SkyBoots.
If you think I'm being reductive or insulting, it's not meant to be. I grew up taking communion, and agonizing over every masturbation. The story isn't the problem, it's the rules to be part of the Fandom.