Perhaps "you lose your job and decide that your WoW bill is a non-essential expense, and make the one-time, non-trivial-to-reverse decision to cut it, which is

Perhaps "you lose your job and decide that your WoW bill is a non-essential expense, and make the one-time, non-trivial-to-reverse decision to cut it, which is much easier than every fifteen minutes crushing the urge to start playing."