https://thehill.com/blogs/blog-briefing-room/4085828-a-record-share-of-americans-are-living-alone/

sample quote

The U.S. Census shows that “solitaries” made up 8 percent of all households in 1940.
The share of solo households doubled to 18 percent in 1970
and more than tripled, to an estimated 29 percent, by 2022.
...snip...
“Living alone can be a dream come true,” said Bella DePaulo, author of the forthcoming book “Single at Heart.”
Solitary living means “you get to curate your own life,” she said. “You decide when to go to sleep and when to get up, what and when to eat, what to watch or to listen to for entertainment, and how warm or cool your place will be.” No more fighting over the thermostat.
...snip...
The gender gap in solitary living closes with age.
In the retirement years, women are more likely than men to live alone.
That statistic is partly about women outliving husbands, and partly about “grey divorce,” the rising rate of marriages that dissolve after age 50. The grey divorce rate has doubled since 1990. “It used to be that if people were married for 30 years and they entered their 60s, basically, they were going to stay married,” said Barbara Risman, a distinguished professor of sociology at the University of Illinois Chicago. “You would pass the risk of divorce. No one is ever past the risk of divorce anymore.”

end quote

I guess one upside is that singles can spend on hobbies and interests what they want, when they want,
at least before the current inflation and “supply chain” snarls.