Opinion of this proposal

[politicus]

FP, would at least send a clear signal of what is socially acceptable, which often changes social norms along the way (though not always).

[politicus]

If a law is unenforceable, what's the point of having it on the books?

It marks society values and often influences norms. As an example: Bans on spanking children have led to a drastic fall in the legitimacy of this practice in a number of countries.