You could probably say the same thing for the first gasoline cars on the road or even the Model-T. I'm sure there were people saying things like "Well, if you run out of gasoline you're stuck. I can just stop at a field and let my horse eat some grass and I'm back on the road."

Early adopters in any age will have a rough time, that's kinda the definition of early adopter. However, in a hundred years people are going to be as familiar with this technology as we are with liquid fuel. They'll probably look back at us and chuckle about how primitive we were with our "battery" technology. :)