189 posts and all of them are dodging the question. It's pretty simple.
There's a God that has feelings, why would he care about us doing something that's immoral, or sinning if it doesn't hurt anyone?
I think it's an important question and I've thought about it too. I'm more of a creationist than atheist, but not by much. All this question dodging isn't doing anyone a favor.
My answer for the question would be. I have no idea why God would care about us sinning or behaving immorally if it doesn't hurt anyone.
If it did hurt someone, then I can understand why God wouldn't like that. He would be concerned of us not hurting each other. Why? We are also concerned if someone hurts someone and if God has feelings even superficially like ours, he wouldn't also like anyone being hurt.
Why would we care if someone does things considered sin, that don't hurt anyone? I don't care if someone's gay or masturbates. Why would I? No one's getting hurt.