Nothing...I quit them. After 25 years in Aviation and almost 18,000 hours in the air, I figgered I had had enough. Ain't been in an airplane in almost three years.
Flying got to the point where it was not fun any more. I quit. No Interest in getting in an airplane again, but I still have a fascination with Aviation...
Maybe some day...I will fly again. No Regrets whatsoever.