i just enjoy it mostly; makes me feel good to know that no matter how bad shit gets i can alter my mood if not the surroundings. I think i'm more hooked to being a drug addict as an identity than being a drug addict myself. I feel like drugs defined my life, my path, my future and will continue to do so for better or worse.
initially though, i was curious about spirituality and lucid dreaming which led me to salvia, then dxm, then 2c-i, LSD, mushrooms, 5-meo-dmt and so on for many years. Then i just had to try opiates, benzos and strong stims. Those are the drugs that i mainly use to stay functional, not even for recreation so much, just so i don't feel like shooting myself.
so a mixture of curiosity and self medication. I self medicate and use psychedelics to either have fun or resolve deeper issues.
one tip; don't listen to the media about anything. Self medication is only possible when you are very familiar with the drug and have controls set up in place in case you lose control. SSRIs won't cure your depression either, so they are just shitty antidepressants, things like morphine at least work for a while. But of couse after a while, they start to make you depressed, funny how that happens.
i like drugs because i can alter my state of mind or consciousness with a substance, i find it fascinating. A strong opiate rush is what i think an Olympic athlete winning gold feels like afterwards. To be able to get those feelings by manipulating levels of neurotransmitters or imitating them or however each drug works, is also fascinating to me.