I dry camp 90 % of the time and water is the thing that I try to conserve. I always run out of water before battery power and like Rjsfisin said I hate to fiddle with the water trying to get the right temperature letting the water go down the drain. So I turn it on 15 mins before showering in the summer and 25 mins in the fall and then shut it off and can get 2 showers for 15 mins of burn time plus still wash dishes. Also something else no one else mentioned I hate to hear that burner kick on when outside camping or worse in the middle of the night and your trying to sleep.