Yeah, it's almost impossible to get a bad trip from mescaline (or the cacti SWIM has tried). If it wasn't for SWIM’s recent experience with smoked freebase bufotenine, it would be a toss up between mescaline and mushrooms. SWIM picked bufotenine, because it just causes visuals, and almost no mental effects at all, so I can’t see how a bad trip is even possible. In that respect, bufotenine is not a full blown psychedelic because it’s missing the typical mental and emotional effects of most psychedelics. At least it's that way for SWIM.

I think for some people mescaline is probably one of the friendliest full blown psychedelics around.