8 Reasons You Should Pee in the Shower (And Not Feel Gross About It)
Reduce Paper Waste

Peeing in the shower also means less toilet paper is used. That may save both your household and the city money, as less toilet paper is bought and less clean up of the sewage system is required. Ultimately this is also good for the environment as less toilet paper means saving more trees and paper resources.
Cleaner

If you're still thinking this is a gross practice, consider that any urine gets quickly washed down the shower drain for a very clean pee. Everyone has seen urine drops on the toilet seat that are sometimes left behind. This is no longer an issue when you pee carefully in the shower.