Apparently that's the problem. When they're into sex at all, it's largely perversion, not normal marital procreative sex.
And we're getting there...
It’s the world’s normal cycle - repent and obey God, receive the blessing, take the blessings for granted, mock God (via perversions of all sorts, but mainly by setting yourself up as your own god), and then reap the whirlwind... then the whole thing begins again. Eventually, though, it’ll be the last time.