I agree with what basically OBM has been saying. I know a lot of people who take class A drugs and to be honest a lot of them Are pricks, but this isn't the drugs, it's just that they're twats who think they will up there gangster street cred'. If anything the drugs make them more friendly. Alcohol on the other hand I've seen some of my closest mates turn into complete wankers when they get pissed. I don't personally tend to drink much, but I do smoke weed quite a lot to be honest. The only difference that I have noticed really is my memory is f**ked. Oh and I've never taking anything harder, saying this I'm not against trying it, just not now.
Edit: Forgot to add. After all the smoking I go out, beat up a few 12 year olds, rob some houses and pop along to get my benefits.