And I'm actually not sure it's a bad thing. I used to be in the "just give a phone that's a bit fatter already" camp. But now, to be honest, I'm more inclined to think I want the thinner/lighter phone for the 80%+ of days when the thin battery has enough juice and just carry the recharging brick when I need something more.
Depends how easy it is to slip on and off. Also, a battery case is more or less specific to a particular phone model. You basically toss it when you upgrade to a new phone.
