We know a couple in their mid-50s, never had kids, who have an awesome 10,000 square foot home where they host parties regularly. Huge pool, go-cart track, the works. Always look forward to their invites.
We know another family, one child, who have a 12,000 square foot home. Very social, many parties. Sadly, a sudden heart attack took him. Not sure if she'll keep the house as his job required a lot of social organizing, fundraising, etc.
We've been in our 3,400 square foot home for 19 years, haven't had a party in 10, rarely have house guests, and will have it on the market to downsize as soon as the youngest of our two starts his senior year of high school in 2022, if not earlier.
To each their own. I look at big homes like boats. I enjoy them, I'd just never want one.