I see this as a contradiction to be honest. On one side, yes, I like to "walk" the city (to go for groceries, to buy some tech stuff, to buy clothes, to go to restaurants, cinemas, etc.). One the other side, I don't want to live (as in "forever") in the city, because that means I end up buying a flat (and prices for flats are higher than what I can pay, even if I'm in the top 90% of earners in my country... I would still need to pay a mortage for decades. That sucks). I would love to buy a house instead (as in, with garden, and something bigger than a flat), but the average city doesn't have houses, so I would buy a house far away from the city and I would need a car anyway (or good transportation system) to go to the places I mentioned above.

For me is a contradiction. House prices are high too, but I definitely don't want to spend the savings of my life buying a tiny apartment with neighbours up and downstairs, even if that means I have all the places mentioned above at a walkable distance.

So, these walkable cities are designed for not necessarily poor families, but for families that cannot afford a bigger places. For young people without families, though, walkable cities are great!