> No, I never had that question asked about dancing nor swimming or any other sport.
Or it could be that your experience of disinterest is not universal.
I know plenty of people who express interest in what other people and their kids do, whether they are odd or not.
No, I never had that question asked about dancing nor swimming or any other sport. I think it can possibly come out if someone finds the sport to be odd, but at this point Karate is not an odd sport. It is extremely common sport.