My experience with cannabis was pretty short lived. I smoked it quite a bit from age 16 to about 19. What I remember was at first the weed was pretty tame by today's standards and you would get a comfortable buzz, listen to some music, laugh a lot and the get the munchies. However, I met this soldier who was on leave from Vietnam and turned us on to some Vietnamese weed that was absolutely stupefying. In addition it made you hallucinate. The one thing that I started to remember, that before smoking weed, I had a almost photographic memory. After about 9 months of smoking pot, I couldn't remember hardly anything. I then went on this cold turkey rampage when I quit doing any drugs, cigarettes, or alcohol for about 5 years. My health and memory all came back to better than before. However, I knew that I couldn't continue with cannabis. I haven't smoked any for about close to 50 years now. Other people don't seem to have a problem with recreational part time use, but I think we can all really do without all of it.But the most damaging was my daily cannabis habit in my late teens and early twenties. Here in the Netherlands weed has been freely available for as long as I can remember. I truly believe recreational use is harmless (apart from the smoke) but habitual use is a mind killer.