It's not just a problem for rich people. It's also nice to have if you are coming back home (to your normal home where you live) from a trip and the weather has been very cold or hot while you were gone.
Similar example: came back home from a long trip to stale air. Maybe there's another problem or maybe that's just me, but next time we start the air from the airport and the air is pretty normal by the time we get in.