Surprisingly (based on the fact I'm always high on something) there is quite a few substances I hate with a passion.
DXM - Simple enough, I'm allergic to it. Unfortunately for me, I just picked up a quarter of Ketamine that's been cut with a bit of DXM. It makes my face swell up when I do it >_<
MDMA - Did a good couple ounces of it in the span of 2 months. Ever since then, it makes me sick thinking about doing it. The one or 2 times that I've actually bought a pill, and brought it to my mouth, I threw up before popping it.
Weed - Its a love hate thing. I've been smoking daily for years and years, still do (Ankylosing Spondylitis and Inflammatory Bowel Disease related pain). Recently (maybe the past 6 months or so) however, weed started to FUCK ME UP. I used to sit there and blaze a 20 sack out of my bong no problem. Now if I take 3 bong chops (not even a 5er) I get mad fucked up, like full blown psychedelic experience. Because of this, I never smoke my bong anymore. I roll a gram into 4 joints and smoke those as needed. I still get stoned, but since it enters my body at a slower rate it stops the horrendous negative side effects.
*Insert break time to yell at drunken idiots who just rolled into my room and started punching and kicking each other, which caused a bottle to smash and they kicked over my friends bong (THANKFULLY DIDNT BREAK). How rude right?*
Where was I. God damn drunken idiots in my house -_- ah yes.....
Adderall - ONLY Adderall, CLEARLY I love speed (hahaha) but anyone who's done pure d-amp (or lisdex-amp) knows that the L-amp in Adderall makes a beautiful drug a pile of horse shit.
DOx - Just too long, I have a busy schedule and only get 1 maybe 2 times a year to trip on acid. When my acid turns out to be DOx I'm looking at 12-20 hours as opposed to 8. I find DOx (or other types of bunk acid) gives me a baaad vibe, like something seriously bad is gonna happen any second.
2c-x - After effects are not worth the high at all. Don't get me wrong, I thoroughly enjoyed the 2c-i high as well as the 2c-e high. I didn't enjoy the fact I couldn't sleep for 3 days afterwards, and despite the fact I drank at LEAST 1L of water every hour, It gives me the GNARLIEST headache. Feels like my eyes are being pushed out from the back of my skull, feels like my brain is wrapped in barbed wire. Not worth it IME.
Mushrooms - I DON'T KNOW WHY I DIDN'T SAY THIS EARLIER IN THE POST. Damn. Its more of a personal hatred. I had a STUPIDLY awful fucking trip. I can't even remember all of what happened but I remember sitting on my bed curled up rocking back and forth trying to get a hold of ANYBODY on the phone cuz I was losing my shit HARDCORE. The night started out good too, then I drove home (fully convinced I was operating Optimus Prime. I refused to transform from car to robot though because I was SO CONVINCED that if I transformed into a robot, the cops would pull me over and realize that I was on mushrooms), and thats when all hell broke loose. Never ever ever EVER will I EVER do mushrooms for any reason under any circumstance, EVER.
That's basically everything I hate. Opiates don't work for me (I got a natural tolerance so high that i barely feel 120mg morphine IR, 8mg hydromorph snorted gives a SLIGHT buzz, and the only half decent opiate buzz I got was from 100ug fentanyl + 5000mg (maybe 500 if thats way too much) Midazolam IV (for surgery, the intention was to knock my ass out cold, instead I sat there decently high watching the procedure commence (these are all on a "zero tolerance" level btw).
Anything that makes me tired as well, I don't like being tired I like being awake.