Income inequality: A growing number of people can't afford the recent "necessities" of 2000 sq.ft. per household and two cars.   Until THAT'S fixed, for now, living in this world means getting off the merry-go-round of consumption for status purposes and accepting that you should probably be renting 800 sq.ft. instead of attempting to mortgage 2000.   Hyperventilating about Millenials not buying cars is just that you can't accept what they have: they can't afford them.
Reducing your consumption won't just improve your own bottom line; it sends the signal that they can't keep this system going any longer with cheap debt and societal pressure to consume.  Eventually, they'll start putting more small multi-family dwellings on the market.  Or address income inequality.