Even if LSD were legal, it would remain illegal to drive while under the influence of it. But more importantly, do the laws prevent someone who wants to drive while consuming LSD stop anyone from doing it now?

I'm not sure about the USA, but in Canada, the number of people who use marijuana and the number of people who use tobacco are almost equal, despite only one of those substances being legal. That seems to indicate to me that the laws have no impact on consumption or the limitation thereof.

If you are worried about the effects of people using drugs, you are already witnessing them.

I agree, and feel the same way about people on alcohol -- which, incidentally, has a much greater risk of toxicity than LSD if you overdose. Which of these substances, if any, do you think should be illegal?

I don't mind if people kill themselves on drugs. I just don't want that to negatively impact me.

And the current War on (some) Drugs isn't having a massive negative impact on you? Do you not pay taxes? Do you own nothing at all of value and never go outside?