Because there's usually agreements between neighbors about expected behaviour in the area. Things like "don't start yelling at 3 AM in the backyard", "Don't thr

Because there's usually agreements between neighbors about expected behaviour in the area. Things like "don't start yelling at 3 AM in the backyard", "Don't throw too many parties late at night", etc. Of course what you do inside your house is your own thing, but when it comes to extra traffic/noise/trash, having the house be a bunch of short term people makes it much harder for social pressure to work.