Is drug prohibition a solution or cause of problems, if the war on drugs (prohibition, forbid) has failed?

[jan46]

Example: this short video about the topic
http://www.brasschecktv.com/page/9803.html

Many countries are decriminalizing drug use, and
moving it under their health care umbrella, which
then says we won't imprison you, but help you, if
you have a drug problem

Bible seems to agree, since
prohibition (law, forbid) causes evil concupiscence,
an overwhelming desire for whatever is forbidden;
Another good reason to flush the law as if dung.