I know what you mean here. I was once at a hardcore rave and got really into a set by DJ Dougal. He was playing all my current favourite tunes and I was with my best mates and just lovin it and properly going for it on the dancefloor. When I eventually had to stop dancing to go to the toilet some guy in the toilet said to me something like - man what you taking tonight and have you got any for sale! haha I have never taken drugs in my life and never intend to with the exception of alcohol. So yeah I know what you mean and I too get swept away in the music - I would have no need for drugs at all.