I was raised Catholic and went to Catholic school so that's my only religious experience from 'the inside'. I found it all a bit weird from a young age and especially hated confession. It was sometimes with our main priest but often with the priests from Africa that I guess were on a priest holiday/exchange or something. They were hardcore.
One in particular scared the shit out of me. We started confessions from the age of seven so I was only eight or so when I was shut in a room with him. I was really shy but said hello and he immediately bellowed, "WHAT DO YOU SAY?" He kept repeating that over and over. I'd forgotten I'm meant to start with, "Forgive me Father, for I have sinned." He was not chilled about it. Then he had me list all my sins but I was a good 8 year old kid and all I could come up with was, "I took the tv remote from my sister." He wanted more so I made stuff up like 'being rude to friends', then felt I'd go to hell because I was lying in confession to a priest. He then made me say twenty Hail Marys to make up for my sins.
It doesn't sound like much but it was harrowing as a young kid. I also used to pray every night to God for a puppy to appear at the end of my bed in the morning but it never happened. I stopped going to church in my teens. One of the highlights (as a youngster who didn't understand mental illness yet) was one parishioner had schizophrenia and it was 50/50 as to whether he was on his meds or not. If he wasn't then he'd randomly stand up during mass shouting, "Fuck Jesus, fuck God, you're all cunts and we're all going to hell anyway."
I'm not keen on any religion and Catholicism absolutely has its issues. Like with everything, it often comes down to the person and some are lovely, some are arseholes. I'm sure it played a role in making me the deviant I am today.
Tl;dr Shit fucked me up