I've noticed that, too. But why?
I've read some interesting articles and studies about this. I've been mulling over some vague ideas... This doesn't include the people who got long Covid, or serious long term health issues from Covid. That's in a whole other tragic category.
1) People have learned to live differently. During the pandemic, we stayed home, for better or worse. We were forced into a different way of life. I think that instilled a kind of low energy for venturing out. Basically, we embraced a form of social laziness.
2) It created a massive recession. Business closed, or changed how they do business, people lost their jobs. People aren't starting new businesses. Going out = spending money. But this doesn't explain why people don't want to work! Seems counterintuitive, right? I think people learned to make do with less. Or learned to accept less. Buckle down.
3) People have picked up more hobbies since the pandemic, and are content to do those without engaging in a group. Or engaging in smaller, more intimate groups. Like their safe "bubbles" during the pandemic.
4) Since isolating, people have found other ways to connect... on line. From home. Where it's safe and doesn't take as much effort to connect. Not saying it's better... just different/easier. I mean just look at social media - the 10 second connection. Easy, quick, little effort.
5) Trust issues. We masked up and every other person became a threat. Trust issues with the government, trust issues with the medical community. Trust issues on a global scale. This makes people weary and skeptical, which is more conducive to living a smaller more contained life, not exploration and innovation. I'm still mulling on this one.
6) People think more about how they want to use their time. The pandemic provided an opportunity to see life differently. Some people discovered the joy of spending time with family. Some might have had an opportunity to discover a life without working as hard. Some found new passions that didn't rely on the social structures they used before. Almost everyone had to adjust in some ways, and some people enjoyed the adjustments and it's changed how they live. Less work. Less stress. Enjoying a "smaller" life.
It's complicated. Covid got people thinking differently. Changed the dynamics of our social structure. Time will tell how much.