For some business travelers, flying is a necessity, but even that's changing quickly. With the advances in teleconferencing, et al, it's seldom necessary for face-to-face meetings; save for technical inspections/troubleshooting, political protocol. etc. For me, the trip and all the things to see and do along the way is far more important than the destination, and having the flexibility to change plans on the spur of the moment makes everything so much better. Try doing that with a fixed itinerary on a scheduled airline and you'll find yourself either unable to do it, or having it cost you several hundreds of dollars and hours of delays. Besides, how many bags of stale peanuts can one person consume? No thanks!