It's certainly a worthy thought-experiment. I couldn't get away without all my 110 outlets, but I'm a gadget junky etc.
I wish I had MORE 110 outlets in a few places; hidden behind the passenger side bench, etc for running fans/chargers etc without having them intrude into the living space. I have a hidden 110 behind the driver's side bench that was initially just for the computer monitor I'm using for tv/games/computer, but I also plugged in a little silent fan into that outlet, and I wish I could do the same on the other side. All the cords are hidden and tucked away. On the other side we wanted to add a lighted mirror with weather display over the sink,
(see here for an example)
http://cgi.ebay.com/Mirror-Weather-S...QQcmdZViewItem
but we don't have a nice hidden outlet to do it with.
I have one more 110 behind the drivers seat for the xbox and satellite receiver and anything else I want to plug in there.
I also have extra battery capacity to help address my 110 addiction, and plan to add a bunch of solar and/or a generator to my equation when I figure out exactly what my off-grid consumption rates are.