The simplest of questions sometimes have the most complex range of answers.
Like, what we should do about cannabis. The use of cannabis within our society is so widespread a body of opinion has grown that to try to combat it, and indeed other aspects of drugs use, is to adopt the pose of a modern King Canute. The argument says legalise cannabis, which would at a stroke undermine the criminal gangs who thrive on the trade of illegal drugs and control the lives of users.