[lotusss]

Your logic is forcing me to draw parallels with marijuana that I don't want to, but this reasoning is not very persuasive.

Why shouldn't safety be a requirement for something to be legal? Should drunk driving be legal? Should firing a gun in a crowded place be legal? Should serving food that's contaminated with a poisonous substance be legal?

I know that marijuana isn't harmful in the way shooting a firearm or poisoning someone's food is. But this line of reasoning--"never consider safety when determining what's acceptable"--is ludicrous.

[esahione]

You're comparing safety of others with safety of one's self.

Of course drunk driving should be illegal, you're putting others at risk.

Think of Kantian logic applied to the body. As long as I am only affecting my body when doing something, it is irrelevant whether it is safe or not.