> The thing that seems crazy to me is how much time alone increases with age. There are many many reasons for it, but one thing I think is especially sad is how much this is a consequence of our built environment.

Huh, amusing way to see it.

Introvert here.

I see it as a natural progression. "Finally, I don't have to be around people all day and can have lots of time to myself!".

I'm actually impressed at how few Americans live alone under the age of 30. I guess having roomates is more of a thing in the US...?