My bedroom door is face to face with the bathroom door. Literally it's two steps at the most. I rarely turn any lights on at all. Open the door, 2 steps, pee, 2 steps, in my bed.
The most annoying/frustrating thing about that is my cat likes to lay in the middle of doorways. I can't tell you how many times I've cussed out that cat because he was under my feet and I couldn't see him.
Sometimes if I have to poop, I won't turn the lights on in the bathroom and just use my cell phone light. It's pretty cool actually. Kinda makes me feel like I'm not in my own house and that I may actually have to "survive" instead of just casually walking to the bathroom to poop.