The Wife clearly remembers her grandmother, the Amazing Farm-Wife, saying much the same things...
She was 90 at the time...so, it must be a "mom-thing".
These are the ebbs and flow of life. Children graduate from sippy cups(the inventor of which, should have received some sort of award!) to coffee mugs. The arrows, that were once jammed inside our very cramped quiver, are shot out. Wrangling them to all come home at one time, doesn't often happen. It's the rare moments that help us to look back and be thankful for all the craziness of the past with fondness.
Those little ridiculous trials-the child who refused to eat potatoes, the dishwasher that never quite worked right, or the dustpan that was forever cracked-they weren't that big of a deal after all.
Probably didn't need to stress over the unplanned haircut, or the marker on his face.
Enjoy those rare moments...cherish them in your heart...