A Sense Of Temporary Ownership

I was riding the bus last night, and I noticed that a guy got up out of his seat, grabbed a bus schedule, and proceeded to sit back in the exact same seat he was in previously. Now, this was on an articulated bus with about four passengers total; i.e., the seating options were in abundance. However, he decided to go back to his seat somewhere near the middle of the bus. Why would he (or anyone) do that? He could have just as easily sat down in the seat right next to the bus schedules. No, he felt compelled to return to his exact same seat. I'm sure we've all done this as well, but we probably don't recognize it. Is there a sense of temporary ownership in selecting a seat on a bus? These are questions with no right or wrong answers. Comments?