There's probably a fundamental political question underlying a lot of these discussions: do you default to letting people do things or not?

My long-held belief is that there's a certain hubris to saying that you know best for everyone. So I default to letting people do things, since preventing them is exerting power over them. With that framing, you would need evidence that something is harmful if you're going to exert power over other people to prevent them from doing it.