You're certainly right that Linux is far from being a viable replacement for Windows in the gaming department - and that things aren't likely to change anytime soon. 'Chicken and egg' type of problem, as far as publisher interest goes.
Then again, the titles that are available natively right now are among the best in their respective genres - Neverwinter Nights, Doom 3, all of the Unreal Tournaments, etc. Depending on your needs, that may be sufficient to satisfy your gaming appetite.
This comment was edited on Nov 18, 23:46.