This is a good point, but I think there's still a distinction. If you're broke and starve to death, that isn't (usually) the result of someone's deliberate choice. But when love or sex drive someone to doing something terrible, it is still ultimately their decision.

I suppose this distinction is complicated somewhat when you take reductionism into account, but in practice it still seems to be a worthwhile one.

If there's a decent solution to this problem, by the way, I'm listening. It's certainly an awful state of affairs.