Every coder is, in my opinion, a borderline junkie.
Every programmer I ever met has been a bit of a self-absorbed addict, chasing down the next clever algorithm. We're cerebral adrenalin junkies, hooked on the punch of endorphins when we execute a script successfully. When we write a test that passes.
The better ones are addicted to color. If a green bar was heroin, we'd be shooting it into our veins.
I suppose there are worse things to be hooked on.