My experience is that weed is VERY bad for people with mental issues. I knew people who could smoke weed all day and still go to class. I knew people who would smoke weed and become a waste case. Two of my college roommates were addicted to weed. Dawn until bedtime was weed time.
But the one thing about weed is that people are willing to smoke it all day long. I honestly don’t know anyone that drinks all day.
I do, I am sad to tell you, because it's a person I've loved rather dearly all my life, and watched him go so badly sideways over the decades.
I also used to know someone who was a pot-head dawn til bedtime -- ME!!! At about 21-22, nearly 40 years ago! That was pretty hard to break, but I did it. The worse one was the alcohol (I really think genetics play an important role, but it's still behavioral) -- I was headed to where my friend who drank all day had gone, but I made a different choice.
Pot or booze, physical/mental addiction to either is a curse ... but in the way of curses, sometimes a disguised blessing. God works His wonders in mysterious ways.
Interesting as that has been my experience too...
I knew people in university who smoked from sun up to sun down and operated fairly well though they would have done better without the stuff.
I went to a well known uni where we had a number of now world famous athletes who smoked dope while there. It was before drug tests.
I always chuckle when I see them pontificating on TV when I remember what they did in the frat house next door...heh....