When I was a kid, my parents invited all kinds of people to our home. Our home was kind of like a church, so we were a little different from your typical American. Every week, our house was quite lively. Until I was 15 years old, a bunch of kids my age came over, so I had a lot of fun. We'd play tag or ride bikes, stuff like that. As I got older, I would talk with the adults as well, but usually I just played.
When I turned 15, even though we moved to a different state, my parents still invited people over as usual. However, nobody my age came to our house, so I spent time with the adults instead. There was one older guy that I thought was funny, so I talked with him a lot. Because my dad knew a lot about the Bible and taught me a lot, and because I also took classes, I knew a lot too. There were often times when my dad would ask that older guy questions like we were in a lecture or something. When that happened, the guy would turn to me, I would whisper the answer to him, and then he'd give the answer to my dad.
Because I had experiences like that, I don't think it's strange to talk and spend time with people that are much older than me. Not only that, but I also don't think it's weird to invite people that I don't know very well over to my home. I feel like my home is a place to invite people and get to know them. In other words, I use hospitality to get to know people better.
I wonder if Japanese people are different? I get the feeling it's more normal for Japanese to invite someone over to their house after they become friends with them, but I need to do my research. What does everybody else think?