I'll often fly from MIA-EZE on Sunday night, 8.5 hours of flying then after landing, check-in to my hotel to shower then head into a Monday morning meeting. If my company didn't fly me in F or J I wouldn't physically be able to handle it and wouldn't be remotely productive. I'd also leave them and go work for another company that would pay for the J travel. It does mean a lot to me that they do spend the extra money for my comfort and I'm therefore more loyal to my company and more willing to go the extra mile or go out of my way to benefit the company.