Gavsmom,
I'm not sad, but I hear you. Early milestones are kind of neat when the kid is very young. Unfortunately, it becomes less neat and more weird/freaky as they get older.
People would exclaim at my toddler and be happily amazed, but now he is an 8 year old describing a geometry project and they look dumbstruck. For example, my aunt said she never even learned geometry in school and had no idea what my son was talking about.
Instead of being able to compare my son to someone's friend's grandchild, he is all alone without comparison (to them). I, too, am glad there is this site to hear about other kids like mine.
His brain is growing like crazy on the inside, but he is still a silly little kid making jokes about poop and explaining elaborate rules of jinxing to me! Truthfully, in that regard, he is more of a happy-go-lucky kid than I ever was. I'm so happy for him!
Kate