Except for the fact we know the health risks (and benefits) of cannabis to a much better degree than the 40/50s generation did about tabacco.
We really don't. For a start cannabis is a psychotropic drug and our understanding of the human brain is still fairly primitive. We're also at a point where the links between cannabis use and mental illness are starting to pile up.
Anyway, how's the Brexit going? I haven't been following it except for the occasional article in the mainstream Dutch news.
Withdrawal agreement has been finalised (at least between the technical teams) and agreed to in principle behind the scenes. May and Merkel sidelined Barnier and thrashed out a deal between London and Berlin.
Won't be made fully public for a while, a few politicians need to get their pictures taken and Barnier will want to eat a few more cakes at taxpayer's expense, but it's a done deal. May is trying to sell it to the Brits, Merkel is trying to sell it to Brussels. Only thing that can wreck it is either a) internal Tory party plotting (can't be ruled out) or b) some idiot in the EU Commission (probably Selmayr) trying to take on Berlin.
Next hurdle is that future trade arrangements need to be negotiated but that'll be post-March 2019.