I had a pop-up for 20 years with no hot water heater. I remember coming back from a six week trip to Alaska and back with the camper. Got home in the early evening and filled a pot with water and put it on the stove to make some hot water. It was the most natural thing in the world to me. Took me a moment to remember I could just turn the tap :B
I think it depends on what you are used to. If you have never had it you will probably do fine. Now, having a TC with a hot water heater, I doubt we could go back to not having one.