Alas, I gave up my bikes when I started flying airplanes. I have to admit, bikes are more fun though.
Curious as to why you decided to exchange motorcycles for airplanes? Or if there was a different reason that you gave up motorcycles when you started flying airplanes.
I started riding in college, and after moving to Williamsport gave it up for a couple of years. The primary reason (looking back on it) was that I still had my semi-reckless college riding habits, but was developing the sense to realize I wasn't immortal. I also had transitioned from riding in the flatlands to riding on twisty roads that have deer, gravel, etc. I've since toned down my riding to compensate, and am now happily back into riding.
I wouldn't call riding motorcycles to be more fun than flying (obviously a personal opinion). It's a very different kind of fun. What I love about flying is the mental challenge of keeping ahead of something traveling 200 mph or more over the ground, and keeping track of all the various weather and other issues surrounding the flight, and the like. Or sometimes just buzzing around low and having fun with that.
With motorcycle riding, it is very much about the journey as much as (if not more than) the destination. The mental stimulations have some similarities to flying, but to me are overall a different experience. What I love about motorcycles, though, is that they are an inexpensive mode of recreational transportation. The poorest fuel economy bike in the garage gets 40 mpg, and that's the Honda RC51 race bike.
The difference I find is that I don't fly for fun, typically. I fly because I have a job to do or someplace to go. My wife and I will hop on the bikes just for fun, though.