I have an aisle preference and typically get it as I need to hop up to the lav more often than most and don't want to bother people to get out. Last week I somehow landed in a window seat on a flight and was worried that my somewhat hostile-looking seatmate in the aisle seat would not take kindly to having to let me get by 2-3x on a 3-hour flight. However, to my delight, he kept drinking glass after glass of water the FA offered so every time he jumped up so did I. With that kind of an aisle seatmate, I'm perfectly happy with the window.

But bottomline is I'll take whatever I can get in F.