You guys have really tried a lot of stuff
Me, I got a limited experience.
Very little alcohol, and recreational use of mariguana (down from about once a week as a teen, to 2-3 times a year as an adult) and hashish (down from every day stuff in my 20s to zip).
Peyote juice, once, with little effect.
Benzedrine and other speed, some time in my teens.
As a nicotine addict, I find pot and hash very little addictive. But, of course, I've seen several people go from there to hard drugs to death.
My social experience is that prohibition hangs heavy into forming addicts. Typically, a lot of friends would smoke once in a while -or daily- and do our things amongst our extended bunch. But when someone of our group started to hang out with people he had nothing in common with, but the drugs, we realized he had been hooked.
Why did he hang out with those birdbrains? Because drugs were not always available.
And yes, this guy -who has had a few mushrooms, but smokes pot daily for 30 years- has now some noticeable memory and concentration problems.
As for pleasure, I find there is a qualitative difference between hashish and mariguana, in favor of the former. We'll be back later... if the thread keeps going.