I know, from reading other local and semi-local bloggers, that many folks out there who visit from time to time are just starting down the road of parenthood. My wife of 30+ years and I are a little further down that path.
The role of being a father and mother is constantly evolving, but never really changes. My 80+ year-old mother still requests "2 rings" to let her know I've arrived safely at home after every visit.
My advice? Enjoy every moment.
Twenty+ years goes by very, very quickly, and before you know it, your home will be much, much quieter.