For those who haven't had the pleasure of doing it, taking an energetic 2-year-old on an airplane feels kind of like transporting a sack of live bees. He's constantly moving, other passengers don't want to sit too close to you and every once in awhile, you get stung.
Traveling with children can be a stressful time for parents, and surrounding passengers. Unlike environments that allow parents to simply "walk away" from a crowd if a child is disruptive, when traveling by plane, everyone is a captive audience with nowhere to go.
I try to pretend that I am just like you, my non-parent friend. You've got nothing to fear! Not a thing in the wor-- no, Lucy! Don't eat that -- Lucy! What is that thing, anyway? Everything is going to be just fine. False alarm, my non-parent friend! False alarm!