If you're a guy, there is no reason for you to urinate in a toilet whatsoever. Just piss in Gatorade bottles and pour them down the kitchen drain. For extra points, wash and reuse the Gatorade bottle for water at the gym. Or just drink your own urine like Bear Grylls and save on that tofu 'n sprouts soap.
...
My initial thought? Wow, you mofos are nasty.
Maybe it's wasteful, but I also change my underwear and socks every day. Something about "letting it mellow" just seems like white trash deluxe. Disgusting. If you're living with me or a guest at my place, you better flush the goddamn toilet. If so you're environmentally friendly that it kills you to waste water,
consider other aspects of your life that are wasteful, too. And keep your bleeding heart and urine-hoarding urges out of my bathrooms.
Come over to my place after eating a plate of asparagus and leave that radioactive piss in my toilet? You best check yourself.