Biggest reason you do/dont believe in god(bible)?

I used to believe in god, but I don't anymore. I guess that is because I realized that if you choose to be apart of one religion the others would be wrong, and they would like burn i hell. Also the bible is constantly contradicting itself, and how anyone good easily chang the original words through out time.I am glad I don't believe anymore because when I did believe I used to do good things so I can get into heaven and I did judge a lot of people. Now I do good things because I want to and don't judge what anyone believes in. I just believe in the universe because it is real, and I know it's there.