They say we need to increase density but this is actually just decreasing the standard of living.
The most enjoyable places I've ever lived and visited were by far the densest ones. To each their own, I guess. And Vancouver which is supposedly the densest city is still at 1/3 of the density of a city like Barcelona (which is an amazing place). That's why I love downtown Vancouver, because it's the densest region of the densest city.