Because he's evil
Alternate quote, almost went with this from Trainspotting
People think it's all about misery and desperation and death and all that shite, which is not to be ignored. But what they forget is the pleasure of it. Otherwise we wouldn't do it. After all, we're not fucking stupid. At least, we're not that fucking stupid. Take the best orgasm you ever had, multiply it by a thousand and you're still nowhere near it. 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 pissed. 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.