None, but I’m not willing to subsidize someone who decides to sit around and be stoned or hung over all day. Hence my opinion.
The constitution DOES allow congress to enact laws. As such drug laws are statutory, not constitutional.
A libertarian society wouldn't require or even ask you to do so.
That's we should only accept drug legalization if welfare and medical care would be denied to habitual drug users. And that would include alcohol and prescription drug abusers, which are currently subsidized.
I'd relent for medical treatment ONCE for addiction, to get someone back to being a productive member of society. But, after that they are on their own.
Why did the Prohibitionists need a Constitutional amendment to prohibit intoxicants?