Recently, I was sitting by my gate for my flight and had my laptop backpack on the seat next to me. There were a good number of empty seats nearby but one person decided to sit on my backpack without saying excuse me or asking me to move it? The fact that my computer costs around $1K and the bag containing other expensive tech. gadgets kind of pissed me off. Anyone have a similar experience with people taking your seat or sitting on your stuff that was next to you?