>I don't think this particular issue has actually been debated on the internet all that much because I haven't seen it come up that much; the obvious solution is to draw a parallel to alcohol. It is illegal to be drunk and driving.

It's already illegal to drive impaired, doesn't matter your intoxicant. It could even be legally prescribed by a doctor.

But it's much more legal to sell alcohol than it is any other drug. Put the onus on the drug sellers to provide a safe controlled place to consume... which I hope comes with some legality and maybe some access to the banking system.