[Utmost Certainty]

It wasn't too long ago that people were saying "Nobody wants same-sex marriage".

What's the alternative? Establish laws explicitly prohibiting every immoral act a person might do?

Don't think that's very practical. Like I said, morality has to come from within as something a person knows and believes—through upbringing and experience, etc.

[circlecity]

"What's the alternative? Establish laws explicitly prohibiting every immoral act a person might do?"

Most State criminal codes are specifically enacted to prohibit a wide range of immoral acts. If governments didn't legislate morality then nothing would be a crime.