Interesting. The home school groups around here don't have anywhere near the amount of extra-curricular activities that the schools have. Unfortunately, the schools do tend to put all their money and focus into sports.
"so I will not be encouraging D to do 18 outside interests along with school, like some parents around here."
I am curious about this comment. It seems like a few (well chosen so as to not go overboard) activities will make a kid more well rounded. There are a lot of important life lessons to be learned being part of a team (whether that is football, band, or Beta club). I do agree that some parents either encourage too much outside activity, or allow their child to over-commit. Everyone needs adequate time for classwork, and down time, even kids.
Maybe when my kids get a little older, I'll start getting nervous about the empty nest. Hasn't hit me yet.
"Recollect me darlin, raise me to your lips, two undernourished egos, four rotating hips"
