Dr. Suess was never more right than when he wrote in one of my favorite books, "X is very useful if your name is Nixie Knox. It also comes in handy spelling ax and extra fox."
I couldn't sing the words I know and hum through the ones I don't to George Strait's "All My Ex's Live In Texas" without that clever little letter.
Without X, I couldn't say my favorite string of letters: XYZ PDQ. Seriously, as a kid, this was the coolest sounding combination of letters that didn't spell a word that I'd ever heard.
X is crucial to the word I feel right now: exhausted! And so I am off to bed.