Since my seasonal site is 30 amps I use propane to heat the water. In cold weather I run two 750 watt ceramic heaters and set the furnace thermostat at 62 degrees. I only go through a 30# tank every couple of years and about the same for the outdoor grill. I wouldn't want to do without propane.
Some people camp without any conveniences, just not my idea of fun. Personally I would not want to be dependent on electric hookups.
My other RV has a built in generator, unless I need to use the microwave or A/C it's not run where there are no hookups.
To each his/her own.