marijuana should be treated the same way as tobacco or to a lesser extent, to alcohol - it's a carcinogenic scourge that creates mass dependency and kills scores of people, but it does it slowly via cancer and heart disease, rather than via overdoses. it is possible to use it responsibly or irresponsibly. where marijuana is far worse than alcohol and on par with tobacco is in it's second hand smoke phase, and it's ability to create nuisance and public health emergencies for people that don't smoke it habitually.
the data is abundantly clear that legalizing marijuana in canada has been an absolute catastrophe and a total failure, from any analysis point - from a public health perspective, from an addictions perspective and also from the perspective of a casual user. i have generally enjoyed smoking very small amounts of marijuana on an infrequent basis and have preferred low thc levels so that it's actually fun. nowadays, it's mass marketed as a drug for addicts and is 5x as strong as it used to be. it's not fun anymore, it just knocks you out like a retard on heroin. i would rather buy periodically from a hippie with a grow op in his basement making low potency pot, but that market is wiped out. you have to buy it in overkill packaging at potency levels designed to create dependence and bad experiences. as a casual user, i would rather it was illegal again.
it's led to extreme difficulties finding non-smoking housing in the country's urban areas and it has almost entirely reversed decades of progressive health initiatives to reduce indoor smoking. people have stopped caring, and started looking at you funny if you complain that they're smoking inside. it's a complete embrace of anti-intellectualism and scientific backwardsness.
the latter point would make it fitting for trump to be the president that is actually dumb enough to make this mistake, where every other president has thought about it and looked at the data and stopped. data is of no concern to donald trump.