In general if the lights are on I stand, if they're off I sit.

That seems a reasonable compromise between convenient and sanitary.

Thanks to radiation my weak nuts keep my T levels in the 200s and my once average size but proud and fully functional cock about half its original size on a good day. The latest side effect of the radiation is urethral scar tissue that has had 3 surgeries since last fall. A perennial weak stream is a constant I live with. Sitting is more convenient now because when I stand the stream has a mind of its own and it’s better than peeing on my feet.