Correct. At the risk of stating the obvious, indoor plumbing (and public sanitation in general) is not something required for you as an individual. It's something required for society as a whole to sustain value added activities that require dense urban areas without debilitating epidemics wiping out productivity (and any other measure of well-being) in those urban areas.
Always how it shows up too: someone says "I've been camping and it was fine".
That's not what a lack of indoor plumbing is like though. In fact going camping when indoor plumbing exists isn't even the same: when it's a few enthusiasts digging holes sparsely is very different to when the entire population is doing it.
