Or, put another way, would you rather be able to look out of the window or have an unobstructed path to the lavatory?

The latter might sound like a minor concern, but for those who don’t want to bother a seat neighbor — especially if they’re asleep — it’s a major consideration. And while leaning against the window makes falling asleep easier, the aisle offers extra legroom (at least when no one’s walking by). Whichever your preference, there’s one thing we can all agree on: The middle seat is the worst.