Don't feel selfish!! they are the ones doing the wrong thing, by getting all those hard core drugs... if you want to "ditch" them, do it, you're doing it for your good, and the last thing you want is to get hurt.
If you just want those friends stay with them... as long as you don't become like them doing all those kind of drugs, you're fine!
Odi et amo. Quare id faciam, fortasse requiris.
Nescio, sed fieri sentio et excrucior.
~Harrie's proud brother!~