Also FWIW, since I didn't say it earlier: in addition to being ambivalent about having children, I had no prior interest in children. They tend to like me, for reasons unknown, but I've always been pretty awkward with them, and had no real interest in playing with them, looking after them, etc.
That's still true, except that I'm not at all awkward with the hatchling,* and I enjoy playing with him.
*It's by definition impossible, because I'm (and the Maiasaurus, obviously) all he knows.