u asked y do drugs b4 and the reason is simple. it is universal for people to try and alter there perspective of reality or to escape the troubles of everyday life. somethin as simple as a 6 year old spinning around and around in circles so they get dizzy granted its not as dangerous as drugs but the altering perception part is. humans are not the only creature to use drugs either. animals of all kind ingest marijuana and coca leaves(were coke comes from just incase u werent sure) and i really dont think u can say animals r tryin to harm any1 by doin so. and dont pass that bull of how people should kno better because it is all a matter of perspective.