Replicating the nice dining table and means to allow for overnight guests failed to magically cause guests to appear. I never figured out what piece of the puzzle I was missing. My mother put a lot of emphasis on being able to serve her guests and make them comfortable and she was always surrounded by adoring friends and relatives. I tried to do the same. Somehow, that didn't get me a lively social life.
You might then be interested in doing some research on the 60s term "vibes". It could be that it was your mother's vibes, more than the house decor, which must have made her socially attractive.
But yea I see what you are saying in essence. It has been part of your "social conditioning" (if we do X we get Y). In (traditional) India, one stellar example of the male social conditioning is that "if I get a good paying job, I'll get a pretty wife".
That said, modern generations are more about going out and doing things in short social engagements. People 'feel' very busy, and the idea of an overnight stay may be too much commitment for someone that doesn't feel they have a strong friendship with you.
I'm right there with you. People are much different than they used to be; it's normal now to not even know your neighbors, let alone talk with them. I've had people decline dinner invitations, and former friends outright ignore my messages. I mean, I hope I'm not the problem but the thought crosses my mind. It sucks, especially if you want those relationships you saw your parents have but no one else around seems to.