Not OP but I was in a similar situation. Whole family was poor, white, Christian, Republican, listened to Rush Limbaugh (and the horde of soundalikes) on the radio in the car every morning on the way to school and everywhere else we went. I don’t think I ever really bought in but when you’re a kid there’s just so much about the world you have to take on faith, often because you don’t know there are other options besides the defaults you grew up with. Eventually you get around to questioning things and the foundations start to crumble. For me the first domino was that I couldn’t really square why god would make people gay if being gay was a sin, and they didn’t really seem to be doing any harm, even the very abstract “sanctity of marriage” argument kinda falls off once you see that het people get unlimited “violating the sanctity of marriage” passes and queer folks get automatic damnation. After that more foundational assumptions started to fall away and I drifted further from the church over time until I became the heathen radical socialist that shames the memory of my god-fearing parents to this very day.