True but opiates are similar. The American opiate crisis began with prescribed painkillers. A lot of people slowly became addicts without realizing it was happening because they just took the pills when it hurt not realizing eventually that some of the pain was withdrawal.

The schedule 1 definition (high risk of abuse, no medicinal purpose) is the sort of thing that while I get it, I don't know of any drugs that actually belong there. Psychedelics are on it despite having low risk of abuse and medical uses. Cannabis is an analgesic, antiemetic, and appetite enhancer. Ecstasy has a place in ptsd treatment. Heroin, cocaine, and meth are all schedule 2.