Mark Renton - Trainspotting

"When you're on junk you have only one worry: scoring. When you're off it you are suddenly obliged to worry about all sorts of other shite. Got no money: can't get pished. Got money: drinking too much. Can't get a bird: no chance of a ride. Got a bird: too much hassle. You have to worry about bills, about food, about some football team that never fucking wins, about human relationships and all the things that really don't matter when you've got a sincere and truthful junk habit."