I am a former drug addict, i used to use meth in really large amounts due to tolerance, i suppose i would just get high.
Though i haven't used it for quite a time, maybe i'm not that tolerant to psychostimulants right now 🤔
When i used it, the biggest problem for me was that i went crazy quickly because of it. Like, paranoid schizophrenic level of insanity, i had hallucinations of chinese communist spies installing their spy robots in my vent, i thought it is real and that was megascary. That was the main reason i quit