The fact that we travel more frequently.

I travel far less often now than a few years ago. I feel the airports today are so flier hostile that I would rather just stay home. My last few vacations were spent within driving distance of my home. Even though I could easily afford the airfare.

To put that into perspective... I used to fly a lot. A weekend trip across country would not have been an unusual thing for me. My wife and I flew to Japan several times a year to visit family... we just don't do that anymore.

Now I'll fly on business if I have to. but that's pretty much it.