Hehe, neanderthal quite possibly. No CO2 sensor, no fire alarm, no charger/converter, not even an inverter. Less to go wrong I suppose? But to reiterate, we just take short little trips, charge our phones with the one DC outlet, and watch movies on an iPad that runs for five days while in airplane mode (turning it completely off between movies.) We hope to be full timing it one day though (in the distant future :( ).
Regardless, I had no clue leaving the battery below full charge was so detrimental, so I'm going to take everyone's advice and get a 50 or 100w panel and a 10 amp charge controller, keep the battery topped off from now on!
Thanks!