Yes, IMHO I think it should be legalised. The prisons in the USA and elsewhere in the world are clogged with minor drug offenders which serves no useful purpose.
Let's release the already stretched resources of law enforcement to deal with more important issues.
Then the silly people who want to befuddle their brains can be subject to similar laws which regulate alcohol.
Just cause it's legal doesn't mean it is compulsory to participate.