I concur. Not a study but I've spent years working security in welfare offices, shelters, winter encampments, and loss prevention. I've seen every type of person and situation and very few are predators or criminals. Most of them are disabled, elderly, and women/teenagers. Men who worked hard until their bodies broke.

Also I would argue most of the crime would disappear if the government didn't give drug dealers a monopoly on drugs. Like bike theft would still be a thing, but the vast majority of petty theft is bartered for drugs.

We could solve a lot of problems by having medical facilities that provide drugs for free to addicts. There people can directly access recovery resources or maybe with a doctor's help they can lower the dosage gradually. EoD people doing these drugs until they die anyways, so what's the difference? Oh right, police would lose their "war on drugs" funding. Can't have that.