I would like to inform you that allowing marijuana to be free would most certainly be catastrophic. If medical cannabis was free it would easily be taken advantage of. People of all sorts of class would misuse this substance and this would cause poor judment andill thinking. In other words a homless man would be smoking or consuming marijuana instead of trying to make his life better for himslef. Marijuana should never be free in any circumstance.
If it came about on its own accord then there would be no problem. For the government to try to make free marijuana happen would be difficult. However, if we just allow people to grow their own and enough people start growing their own they will have so much surplus and nobody will be buying from them because they will just be growing their own. And then it could just naturally evolve into marijuana being free. If this were to just evolve and not be imposed in a single day there wouldn't be a problem.