I think there is something exciting about turning the heel of a sock.
However, I think the real pleasure is in the idea of knitting in 3 dimensions. I am sure it is my geek side showing, but I have delighted in this since I figured out (many years ago, at about the age of 10) that knitting on 4 needles was just a grown up version of spool knitting or corking. However, with 4 needles, you could go in other directions , as well. You weren't stuck just making a tube.
Meanwhile, at my house, there are big changes. We have become empty nesters!
The cat and the dog are still here, so we won't be too lonely.