There’s been no strong studies on the harmful effects of weed due to its illegal status. Now that is legal in many places, in 30 years we will know a lot more as this natural experiment unfolds. I would not be surprised if we see different but equally harmful effects.
The issue is the prolonged constant daily use of it. Unlike alcohol, it's much easier to get by in the day with weed, and a lot of people do use it as that. It offers them an escape from reality without the full social repercussion of something like alcohol.
That’s a good point. I’ve known people who smoke a joint every couple of hours and outwardly seem more functional than someone who has had three or four drinks.
Let the experiment begin.