I had the opposite experience. I was convinced I was going to hell and that there was nothing I could do about it, so I thought I may as well be glutinous and selfish to enjoy my time here before getting tortured for eternity. It caused me some serious trauma, and on top of that it led to me hurting family and friends.
I don't think I could've ever left my self-loathing and selfishness behind if I didn't let go of my religion.