By definition, that alteration changes the user's experience of reality and therefore, their ability to cope constructively.
How does anyone think widespread drug use is going turn out well for the individual user or the community they live in?
@BallotBoxJohnnyDemocrat2wks2W
It's not about increasing drug use through "widespread use" as you put it; it's about decreasing the black market/crime and increasing safety through regulation. The US can't even regulate a safe food market, so I wouldn't expect them to be able to tackle the drug problem wholistically. We can't even provide or treat mental health problems, which in lies the main the problem and why people turn to drug use in the first place.