Agreed.
Mostly I stick to classic shows like Green Acres, Growing Pains, Petticoat Junction, I Love Lucy, Babylon 5, Farscape, various Star Treks, etc.
I really am used to a 21+ episode season. It helps flesh out the story. Also, if a series ends abruptly (Firefly *cough!* Sputter! Cough!) at least you got 21 episodes over 7-9. I highly doubt that Babylon 5 or Farscape would have been as well received had they only had ten episodes each season, and they'd be extremely short after 4-5 seasons, and have far less re-watchability.
Also, still mighty miffed that Stargate: Universe never got finished.