Not to mention people could just as quickly harm themselves going to a 7/11 every day to eat carbs or driving a motorcycle or drinking alcohol or engaging in 'extreme' sports. But we people do those things anyway even though there's plenty of science to show it's dumb.
Especially if those 'evils' are a) entirely non-violent and voluntary only affecting the individual and b) are not going away ala drugs and the giant shift towards harm reduction.
People seem to be mixing up the growing pains of a extremely fast-growing new industry and the long-term realities once the legal, health, business, and administrative systems mature and adapt. The rush to immediately ban everything, well before we fully understand it and/or have experimented with less freedom/fun-destroying strategies, while also accurate measures of usage and risk, doesn't help anyone.
I will admit though, the 'think of the kids' people are making quite an effective stir.