Smoking.. I genuinely regret smoking. I just wish there was something else that held its social context.
Drinking... social context. If you want to find out what someones all about, have a drink with em.
Pot.. Is a wonderful drug in most cases. However its only real problem is the way that it allows you to be entertained with the mundane. It lulls you into listlessness when you should be utilizing that time better, though it can be in some situations a phenomena inspiration maker.
Speed... Is something that it feels like needs to be produced by the body naturally.
Acid. Unless your schizophrenic or suicidal, I think everyone should try acid at least once, and then never again. It is a phenomenal drug that will open your eyes to things you never thought possible. You will understand things on a deep and intrinsic level the likes you have no hope to achieve on your own. Its downside is that its dangerous and it will always be a part of you once you try it.
However the point of these drugs for recreation is the experience, and context that goes along with them. Drugs themselves are wonderful things when used properly and used in proper moderation. They can let you see the world in ways you cannot see without them. The inspire, they encourage, They can make you more productive than you have ever been in your life. They can do great things. There only true downside is when people lack the ability to use them in moderation and begin to grow dependent on them.
See the negative connotations these drugs have are all because of the weak willed people who were unable to stop and let these things harm themselves and everyone around them.
TL
R
I could give a never ending diatribe on the matter, but it would be lacking in the eloquence needed. I yield to the wisdom of the man.