If you choose to travel in a van, you decided upfront that this type of life was worth the expected inconveniences, and even some unexpected ones.
I lived in Mali for 2 years, didn't have hot water, sometime no running water at all. Electricity shut down regularly. I got Malaria. When the war arrived, I lost all my money, and my company.
I had a great time there.
E.G: I remember warmly about the generosity of a Malian family sharing with me their (disgusting) fish and rice diner in a dirty court, on the floor, all hands in the same big wooden bowl.
On the other hand, a friend of mine recently had lunch with me, returning from hollidays in Cuba. She was horrified by the experience, seing only the totalitarian state and the poverty. She didn't have hot water, so she decided not to shower for the whole trip.
She couldn't find a way to enjoy anything there.
E.G: she felt so sad about the omelette a local made for her, thinking it was depressing he had so little, and yet felt obligated to share the few precious eggs he had.
It's all about what experience you wish to have, what are the things you really value. There is no right answer for that of course, and yours is no better than mine.
All that to say: the toilets are not really an issue. Just a constraint.
EDIT: reading again my post, it felt a bit pretentious. I added more nuances in the following one.