Shouldn’t we stop treating nonviolent drug use as a criminal issue and started treating it as a medical one?

hellafunguy35 asked: Let’s face it, the “war on drugs” is a failure. We’ve spent untold billions in the drug interdiction effort, and drugs still permeate our society.
Isn’t it time we adopted a rehabilitative approach, rather than a criminal one?
Here are some benefits:
1) Less prison space would be taken up by nonviolent offenders [...]