if we're purely speaking of Abrahamic religeon (Christianity Judaism Islam and Mormonism) hadn't been invented there'd be 3 major differences
1. LGBT people would be perfectly ordinary, nobody would treat us like shit, because Homophobia is literally an invention of abrahamic religion, prior to it's invention nobody gave a fuck who you fell in love with, or who you had sex with in your spare time, you were still a person to them and they minded their own damn buisiness about your sexual habits
2. there'd be less racism, some elements of it would've still happened of course, but it would've ended earlier and with less need for war
3. several wars would not have happened, due to the reason for those wars never having existed