It’s not hard to prognosticate on this topic. The US Army de facto legalized pot in the 1970s by turning a blind eye to it’s use and abuse. The outcome was an ineffective army. To have good order and discipline, they had to change back to zero tolerance. Society will always have it’s fools who prefer to sleep under bridges stoned and drunk. But to legalize drugs that will cause more addiction and more crime will prove to be folly.
What the Army allows is not thereby "legalized" - and as a free society America has never imposed on itself the standards of its military.
to legalize drugs that will cause more addiction and more crime
No reason to expect more addiction - and every reason (lower prices) to expect less crime.