I'm a combination of lazy and selfish when it comes to taking a pee. Why sit down if I can do it standing, and why wait for a stall if I can use a urinal.
As I see it, hey I need to pee, and if I currently have a penis, why would I want to discomfort myself when it's easy to pee standing into a urinal in a men's room regardless of how I am dressed.
I'm not planning to ask the man next to me out to dinner eh. I don't need to care what he thinks of me especially when in 30 seconds I will be gone and he won't exist in my life any more.
There is also this truth. For those needing to pee, and fretting over where to go, hey, you CAN walk behind a building eh, and pee against the wall where no one can see

Hey, people do this sort of thing all the time. Hell prostitutes often will do a lot more than pee against a wall

If you are stuck with a penis, don't be afraid to make good use of the stupid thing while you are stuck with it. Once it's gone, you can forget feeling like you don't belong in the ladies room too.