Accumulated evidence is just that. Data. Evidence.
I can appreciate your attempt to avoid dealing with the harsh externalities of drug use by dismissing it all as “feelings”.
Are you appreciative of your own attepts to avoid dealing with the extra-Constitutional nature of the drug war and it's corrosive effects on our property and gun rights?
The "harsh externalities" of drug use can dealt with while avoiding those consequences if we'd just properly authorize and define the scope of power being used, but that's never going to happen if we refuse to even acknowlege that there's anything wrong with the way we're doing it now.