I don't find that taking a drug is any different than eating food or drinking water. You get hungry, so you eat and gain energy and feel fullness on your stomac

I don't find that taking a drug is any different than eating food or drinking water. You get hungry, so you eat and gain energy and feel fullness on your stomach, which leads you to drowsiness. Of course, conventionally, taking drugs(like smoking weed or taking MDMA) is done for different reasons than just survival.