Even if God did exist, we still enforce things. And, although I’m atheist, I consider myself extremely moral. When others on here were telling people to go to eBay and buy looted merchandise from Chicago, I recoiled. Not because it’s illegal, which it is, but because it’s wrong (which is why it’s illegal). It undermines society to reward people for theft. I’m pro-life because life is the most basic good, as long as it isn’t destructive - and babies are not destructive. But without God the ultimate authority is life itself. We have morality because it keeps us alive. Stealing from your community makes your community weaker, and it’s no surprise your community would want to punish you. Same with murder, and rape. These things all cause harm, regardless of god. Even homosexuality leads to not having children, which is an immense harm when the ultimate good is producing more life. Just look at liberals vs. conservatives. The average conservative has 2.07 children. The average liberal has 1.4. Liberalism cannot reproduce itself. In a few hundred years it will be extinct.