Let's get balanced. With MMOs, that can sometimes be easier said than done. The same qualities that make MMO gaming such an easy hobby to enjoy – convenience, multiple layers of involvement, immersion, sociability – are the same qualities that make it so easy to overindulge.
After you've been at it long enough, though, you begin to realize that you can dip in and out of different games and different gaming styles as your life evolves. Dark Age of Camelot kept me in touch with my guildmates during the ragged, 24-hour days of my daughter's first months of life. I ground EQ XP like a trooper when she grew old enough to start sleeping like one (a trooper, that is). Once she became interested in handling her own nocturnal drinks and visits to the bathroom, I dove with abandon into hardcore raiding in World of Warcraft. When work began beating down my energy level more nights than not, I began dabbling with achievements and meta-gaming. And none of that touches on all the games my kids have splashed their way in and out of over the years. It's an evolving patchwork – and that's what I'm encouraging you to develop for your own gaming family.