This is one of my biggest frustrations with living in Germany. And btw, so much for "walkable cities". Especially for the elderly who get the need more frequently, but even I ended up in situations where I am an hour away from home and needed to pee badly.
Pretty much every mildly secluded corner in the city smells like piss as a result of this ...
You know for a country who thinks of itself as more socially minded, and not as hardcore capitalist, they do nickle-dime you for everything.
Public latrines are the most basic of public goods.