Someone comes here, says they haven't been to a doctor, might not even have typical clusters, and your first advice is to take ketamine and cannabis because you theorize it might work? I use ketamine at work for animal euthanasia and surgeries, and have seen vet techs get hooked on the stuff, stealing it from the lab, lying about how much they use. I'll catch them passed out limp in the break room from time to time. I believe anything can have a medical use, but I'm very much into harm reduction, not anti drug at all. If OP came here and said "I have been to a doc, prescribed this, diagnosed with this, none of it works, please help." My reaction would be totally different.
Trust me, I hate the establishment more than anyone. And I'm not angry at all, I think you have provided valuable insight and accurate info. My conservatism actually comes from experience, not propaganda. I have seen all manner of substance abuse ruin lives, hallucinogens and cannabis included. I have also seen them save lives.