Other commenters have done a better job addressing your questions more directly, but I want to piggyback off of this question to point something else out: the atomic family, the suburban dream is extremely isolating and breeds loneliness
When you live in your house, only enter and leave by the garage and your neighbors do the same, you will never interact with your neighbors, and your neighbors will never interact with you.
Driving to the store in your personal vehicle there’s no sense of shared identity to start interacting with other people meaningfully. You’re just various individuals in the same space
Having kids can be extremely isolating as to go out to do anything you must either have a babysitter (and be able to afford said babysitter) or bring the kids with you. No opportunity for spontaneity, and it quickly gets expensive to just spend grownup time with friends unless you and your partner spend the time seperately. And taking your kids to events means paying more attention to your kids and the event than meeting anyone else. And if you have a special needs child it can be even more isolating as you are no longer sharing experiences with your fellow parents except for those who also have special needs kids.
We need to do things to foster community and encourage people to talk to strangers more. Having good conversations with strangers is how you make friends, and is a great treatment for loneliness