Really? So which morality should government enforce? Because enforce morality it shall. Its just a question of which one.
False dichotomy. People like you remind me of my dad who commented that enforcing morality is necessary because you'd have people doing stuff like pissing on the sidewalk if you didn't. I see a public health argument against such behavior. Sex in public is unhealthy and disruptive behavior and thus can be banned without enforcing someone's morals. You don't need a Bible-based reason to ban disturbing the peace, thus you don't need one for outlawing public nudity, public sex, etc.
Christians are getting their asses kicked because for so long their response to the hippies was to empower the state to kick the hippies around. The pendulum has swung back and now the hippies are doing the ass kicking with the state the Christians built up. It's a vicious cycle and I doubt most of you have the common sense to see that disempowering the state is the logical solution.