Since last July, I've played Everquest a total of around 70x24 hours, or ~1680 hours.
That's approximately 10 months, or ~10x30=300 days.
1680 hours/300 days = 5.6 hours per day. And that's just everquest. I also have played quite a bit of counter-strike.
During that time, I've also had a full time job, a 6-credit hour summer class, a semester of school, and now I'm on my next regular job while freelancing web development.
Now that I've discovered the value of sleep, I don't have as much time to play. I used to play at night after the school/work day, then maybe catch a couple hours of sleep before repeating the process.