...is never wasted.
I was lucky enough in my holidays to catch up with several friends and their little girls (and I'm seeing my god-daughters and their brothers tomorrow).
Busy lives and scheduling difficulties means that I don't get to see my friends and their kids as often as I'd like. This means that I notice far more than people who see them regularly how amazingly they turn from babies into little people.
One minute they are toddling around and falling onto their bottoms; the next walking and even running around all over the place. I certainly can't keep up with a two year old!
One time you see them they have only a few word 'book' and 'no' being common ones. The next time they are holding entire conversations, requesting that you 'read this book' and saying 'yes' and 'please' and 'thank you'.
Also you get to play games (the toys are so much more fun than when I was a kid) and read stories.
Can't wait until some more holidays come up and I get to see everyone again.