The window seat is the best seat you can get on an airliner.
From the window seat, you get to see plenty of cool things. Such as watching your plane take off and land, seeing the wing flutter and bend, seeing the contrail coming out of the engines when you reach altitude etc.
And don't forget about the awesome view you get of the world around you.
Last summer I flew on a trip to Florida. And I was lucky and got a window seat. It was cool looking outside as the plane went from point A to point B.