Last year, as I approached forty years old, I mused about one of the things I missed most about being a kid -- enthusiasm. Not having it, but people being responsive to it. Everybody loves when a kid is excited about something, and they'll often go out of their way to indulge in that excitement. The kid who loves flying gets a tour of a cockpit; the kid who loves cooking might get some tips from a chef. Adults don't get that. That's not wrong -- it's wholly understandable why not -- but it is something I miss.The other day,...