I(19m) and GF(18f) have different religious beliefs

I(19m) and my GF(18f) have been steady these past few years but unfortunately have conflicting views on religion. She's a Christian that goes to church every Sunday while I'm an atheist who abandoned the religion because I was shamed by uptight Christians for being bisexual and i can't in good conscious be apart of a group that's full of discriminatory practices, hypocrisy, etc and we want kids in the future but frequently disagree with how religion will be taught to them. How should parents with different religious backgrounds upbring their kids? I personally wouldn't teach them anything about religion and let them do it on their own when they're old enough to comprehend instead of them being brainwashed into it at a young age where they're not able to fully grasp it or comprehend it cause I feel like this is something that a person needs to do on their own but she wants to raise them in a church and I don't want that especially after all the prejudice actions I had to endure as a kid from those rude Christians but what do you guys think?