Man you guys are all so sensitive The likelihood of you catching anything is virtually zero unless you lick your hands thoroughly on a regular basis.
I always wash my hands after a sit-downer but for a pee? Not always.
It's just a good time to wash your hands, period. You touch so many things on a regular basis, why not just wash them post pee? It's just good hygeine.
Plus you're handling your dick, dude.
Beauty is truth; truth beauty - that is all ye need to know on earth...except TCP/IP.