I prefer potheads over juiceheads any day and I suspect pot is a lot less damaging. But I prefer people undiminished by any substances. I read once that there is no fatal dose for cannabis, but there is for alcohol. I think it was the DSM-III or IV, I can’t remember. That’s something, anyway.
My experience has been that a person who does any mind altering substance on a daily basis is a fuckup and quickly becomes incompetent and careless which, for me, qualifies them as a confirmed fuckup. I don’t like fuckups. They are annoying and can endanger other people. They are especially useless—even dangerous—on a boat. Potheads are, at least, quite mellow most of the time, but they are still useless fuckups while they are high. And they are annoying as hell.
The worst fuckup I can think of is the alcoholic. I cut them no slack. They are the ultimate fuckups and, because their favorite drug is so accessible and acceptable, they can be fuckups at will for decades and do immeasurable damage to the people around them before—they finally fucking die, hopefully during one of their fuckups. They are numerous and they invariably turn mean. The exception is that rare animal that can have one or two drinks before or after dinner with a little wine and can still act like a civilized human being. In other words, they can hold their liquor and choose safe environments to drink in.