1. Alcohol - can't, because of concern over my heart from past amphetamine use
2. Stimulants in general - I don't even drink caffeinated drinks anymore...oh well
3. Salvia - had a good trip on it the one time I did it (had amazing visuals - experienced different perspective of consciousness), but it was decidedly unpleasant, subjectively, at the same time. Also, I almost inadvertently hurtled my unknowing body through a window, but I was held back, fortunately, by my friends who were on hand...
4. Psychedelics in general - don't really care about tripping anymore at all...also, concern over my heart, again, since doing psychs has always made me somewhat anxious...
5. MDMA - it pretty much falls under my no-stimulant umbrella, but may as well add it here...probably wouldn't have touched this again regardless of past amp use
6. Nitrous - why bother
7. Nicotine/cigarettes - was never into this in the first place; never battled with cigarette addiction; waste of money anyway, in my opinion.
Only drug I still touch is cannabis, but due to monetary issues, I'm planning to quit this too, sadly...although I will likely return to it off and on throughout my life if able.