Squirrels and Airplanes and Poop

Okay so am I the only one who marvels at how every squirrel, every airplane and every poop is like the first squirrel, airplane or poop in the eyes of a child? It doesn't matter how many they've seen it, if they see another it is new all over again. They point and jump up and down and run about (okay maybe not with poop) and have to share their excitement with the one closest to them. I just don't get it sometimes. What is it about airplanes and squirrels and poop??