Lazy Atheism?

[Belacqua]

Normally people argue that it's bad to fuck a child, and that the police can arrest you for that.

Right, and perfectly justifiable regulation, even if child molestation is more an exertion of power than a sex act.

Yes, I agree it's justifiable regulation. 

Here is one case where people's sexual acts may be forbidden by society's institutions (i.e. government). 

If Humbert Humbert makes the argument "But my sex life is purely personal and the state has no business regulating what I do," we would argue that in the case of his practices he is wrong. 

So we agreed that there is at least one sexual practice which it is well for our institutions to outlaw and punish. 

But I was getting at things like the social regulation of homosexuality. Care to try again?

Right -- we both agree that homosexuality should not be regulated. It was in the old days, but times have changed. I'm glad this is no longer a crime, and I hope the places where it is still punished come around soon. 

But I don't see what I should "try again" about. We actually agree -- our institutions are correct to forbid those practices which our society deems unacceptable.