Might depend on your stage of life, or what you make of your environment. I live in a relatively suburban area and constantly have spontaneous interactions at swim meets, local bars/breweries, baseball games, coffee shops, community events, parks, playgrounds, etc. There are plenty of hang out spots to meet new people.

I also play in some adult sports leagues with active older people in their 50s, 60s, and 70s. Also know lots of grandparents so regularly interact across generations. I’ve lived in large cities as well as small towns, and don’t feel like I’m missing much. Spending time at a laundromat sounds awful to be honest.