|I don't know if you can tell, but she is chewing on a toothbrush in this shot. Honest.|
Anyways, the other problem with small hot water tanks is that you sometimes don't have hot water for dishes - and I hate doing dishes in cool water. SICK. It just feels like you're not actually cleaning anything, and afterward you have cold hands which I also hate. So I usually have to pioneer-up, and boil water for dishes . . . in my electric kettle.
I'm practically a homesteader.