This is a logically-consistent line of thought that---inconveniently---doesn't seem to align with evidence. Historically, it seems to be the case that when soc

This is a logically-consistent line of thought that---inconveniently---doesn't seem to align with evidence. Historically, it seems to be the case that when society legalizes something, and people can observe that under that new order, society doesn't crumble, societal attitudes on the morality of that thing change to reflect the reality (albeit slowly). Consider women's suffrage. Consider no-fault divorce. Consider black men and white men being forced to serve side-by-side in WWII by the draft, then coming home to a country that still treated them unequal in the eyes of the law. It's not a 100% consistent scenario (contrast abortion rights debate in the wake of Roe v. Wade), but the trend is for culture to adapt in the face of evidence.