I keep getting older and my desire to live with greater density grows stronger, not weaker. I've recently been able to buy a house, and I just wish I could have gotten one even closer to the city than I did.
This patronizing "they'll grow out of it" is a self fulfilling prophecy when suburbanism is the only option.
To give a concrete example of the apocalyptic talk you mention: We aren't going to be able to do this forever, there isn't enough land. Sure it worked for a couple dozen years while the USA built new highways and sold off it's now-close-enough-for-commuting land, but that time is running out. We can kick the can down the road, but the interest in what's borrowed will come due, though probably in a monetary collapse not a social one. After all, who doesn't want a private island all their own (if they can afford it, and it's maintenance)?
But let's say we can kick the can down the road forever, or functionally forever. Even in that world, for those of us that only want a 1500sq/ft house and a nearby corner store, can we please make that just a possibility? Like, legally? Similarly, can we get some legislative support for 3 or 4 bedroom apartments since as it stands they feel incredibly rare...
The suburbs have a lot of appeal, can we please also build other things at all, sometimes?