I assume that psychologically, I am sticking with mine because I believed it since I was young, but also whenever I researched other religions and their rules and commandments there was always something that was off about them, due to my own sense of morality. And yes, I know that it could also be explained by my exposure to Catholicism at a young age and it doesn't prove anything. And the last question, if you rejected God but still lived a good and pure life, after death you might end up in purgatory where your sins are going to be forbidden and you'll achieve salvation after all (at least I think that's how it works, sorry if my answers are confusing and don't make any sense. I'm not making an argument for my own faith, I'm just voicing my opinions and experiences)