Since I didn't take my first flight until I was in my late 40's, I now have the "if it happens, oh well" attitude.
That's not to say I wasn't a total nervous wreck leading up to it-so much so that one of my friends shared his Valium, which he takes for flying. And, on that first flight (an Embraer commuter jet, no less), the landing was horrid because we arrived early, started the approach but they weren't ready for us, so we went back up. Beibg a flight virgin, I was not happy with that going up and down business.
But I found that, for the most part, I like flying. I like take-off best, then I keep my camera with me and shoot clouds to pass the time or take a nap while cruising.