It was a rewarding endeavor because it turns out that you can be really good at air music the first time you try. None of this "practice until you're better" nonsense. It's also way cheaper than playing an actual instrument. And, I might add, air instruments are very easy to care for and store.
In fact, when my kids get older and want to play an instrument, I plan to say: "You walk in my path and learn the fine art of air guitar and air drums." Then I'll perform a quick demonstration of my skills and they will be sold.
All this talk of air guitar reminds me of a card that I made last year. Here it is.