If stuck in a window seat on a domestic flight, I will keep the shade closed, if for no other reason than I have had the aisle person stare continuously into my space, giving me no sense of privacy at at all.

I turned down opening the shade this morning for one such gentleman. Early morning flight, he wanted to watch the takeoff, I offered to switch his aisle for my window. He declined. Guess it wasn't that important. I just do not know why if you want to look out the window, that you don't book a window seat.