However, man-made drugs that are chemically derived such as cocaine, heroin, methamphetamine, fentanyl, etc. should most certainly be kept on the illegal list.
Why the personal distinction? Because the natural "drugs" are not addictive, they are psychosomatically harmless, they have been found to be extensively therapeutic, and it's nigh impossible to surpass the LD50 and induce a lethal overdose. On the other hand, man-made drugs destroy the body, the mind, have lead to an ongoing opioid crisis, and can easily lead to death.
Just my $0.02