I also agree that drug legalization is really the ONLY thing that will curb the human suffering. AFAICT oil companies are not torpedoing each other or seizing drilling platforms through force. Sure there is nefarious shit between pharma companies at times but it isn't crushing generations of the working class (except under high drug prices I suppose).
Anyhoo, legalizing most of the recreational drugs that are not outright toxic (like meth, just isn't any way to make that safe) and providing treatment centers for addicts is probably the one true way. Then corporatization and regulation can stem the violence, improve the lives of the farmers, and ensure purity and dosing which would do a lot of limit deaths in the end user.
Face it, Folks wanna get high. Whether from alcohol, social media, vidja games, gambling, drugs, sex, base jumping, you name it someone has figured out how to commercialize access to it and no amount of laws has ever squashed any of it. Make it legal, transfer it to at least a semi-regulated and above board enterprise, use the revenue through taxation to treat folks, and move on.