We live in a society where the majority of the population believe in a god. if that were the end of it, it would be fine and we should all embrace each others' differences or at least leave each other alone. but that majority also thinks that its god(s) talk to them through old texts, and often these texts support outdated and oppressive ideas. and this majority votes on those ideas, thinking that that god wants them to. that is one of many reasons why we cant just leave religion alone.
No thats why YOU can’t leave it alone. I am not bothered by these old ‘outdated’ texts. If you don’t like those ideas don’t follow them. Don’t bash others that do follow them.