Is it a bad thing? People's life choices are their own. 29% seems like a fairly neutral number.
How much of a choice is it that they made willing? The number has doubled over the last few decades:
* https://www.self.inc/blog/adults-living-alone
* https://thesocietypages.org/graphicsociology/tag/living-alon...
There are health (and happiness) consequences to not being connected to other people:
* https://archive.is/https://www.theatlantic.com/ideas/archive...