I have a few that are getting close, a paladin around level 83 or 84 right now, and a mage that has been steadily climbing over the last couple months and is now level 53. I would love to have a small army of alts. I dream wistfully of a self-sustaining pack of toons, who can farm and craft each other what they need without me ever having to drop 500 gold on a stupid gem ever again. Of course, even if I play madly until the next expansion comes out, I probably won't quite have that setup, but I feel like it's a reasonable long-term goal. Hopefully I'll achieve it within my next seven years of playing WoW, though.