I have to agree with the notion that at the end of the day, your job is simply your source of income. Some people are fortunate enough to be in a position where their job is fun for them. Good for them. But I doubt even they have sunshine and rainbow filled days one after the other in the office. There's always the shitty task that comes up that WILL land on you. That's why your job isn't your free time (well, maybe it is for some people). Don't get me wrong, I REALLY enjoy programming. But that's why I have numerous side projects that I'm working on.