Same thing happened to me. Also have ADD, have had periods of psychosis, mania, severe anxiety/panic disorder. Cannabis used to remedy all these issues but then i became addicted to benzos, then opiates, then benzos again and repeated that cycle a bunch of times. So after all that bullshit, like almost 4 years of addiction, i just cannot smoke cannabis without etizolam or benzos and even then if i take more than one hit, i get uncomfortably high, i just don't like it at all. I can use psychedelics fine and take dexedrine everyday and i'm actually much happier with the dexedrine/etizolam combo and doing much better in life/school with it than i ever was when smoking cannabis daily, abusing benzos or addicted to opiates.
My father has similar issues as I do but smokes cannabis daily and has for well over 30 years. He never did the whole benzo/opiate/stim abuse thing, but did a fair number of psychs. He's diagnosed with bipolar, the one with mania and depression though, i have more issues with anxiety/dp/dr.
I've read of many others who've had this same issue after benzo/opiate addiction. I think my benzo abuse played a big role in ruining cannabis for me. I can still take a small hit every few hours and i won't get panicked or get anxiety, definitely prefer an indica, hate sativas, but for some reason i can smoke hash oil like there's no tomorrow, but still only while using etizolam or benzos.
I wish i could go back to being a big stoner because things were more simple back then, didn't have to worry about seizures and dying or going through withdrawals or seeing a psychiatrist, but honestly, i spend less money now on drugs, do much better in school/life and am in general much happier, though my moods fluctuate when dexedrine wears off and i have a fear of one day having to come off stimulants and etizolam, as all my mental issues come back in full force and do not go away, even after 1.5 years. Opiate dependency sucked though, hated life then, much better off now. Without etizolam, i am agoraphobic, depressed, apathetic, can't socialize, have DP/DR and insane anxiety with daily panic attacks. Without the dexedrine i can't focus worth shit, have no motivation, get irritable when there are too many things going on around me and other symptoms of ADD.
my theory is that these mental issues manifested in my late teens/early 20s while i was a stoner and escalated around 23-24, at which point i sought out alternative treatment with benzos and then self medicated from there on out. Even after quitting benzos for over a year, i still couldn't smoke cannabis at all, so either i caused myself a worse anxiety disorder than i already had or it just really hit its peak the same time i was recovering from benzos, i don't know. I've had ADD since i could remember though, but it was untreated. When i started taking dexedrine my life changed dramatically, marks shot up by like 20% in school despite the fact it's getting more and more difficult. I am at the top of my class, can focus for hours on end and my old photographic memory is getting more and more clear, instead of more and more blurry like when i was just smoking cannabis all day for years.
i can't recommend it, but it works for me so long as i don't run out of etizolam and don't lose my dex script. Try smoking 1 or 2 hits of really shitty weed, that's about all i can handle anymore.
? I feel you on the weed part, when i see my friends they all smoking crazy purp,diesel,skunk,kush all the good strains and i can just enjoy the smell. 
I think ill have to accept it as well....strangest thing is i dotn feel sober even when im sober i dont know how to explain it...
