As someone who experience DVT and blood clots in every lobe in my lungs Dec 2017, I can speak from experience. I probably got them quick turn to France over Thanksgiving. Dec 21st got diagnosed at ER. I flew (short trips) 2 months after the clots. And guess what, I did it in COACH!! And survived. Not everyone can afford to take weeks and weeks off AND travel in lie flats. Most will travel in the back of the bus. And, I had an aisle for my first trip and got move mysteriously somehow to a middle seat. Didn't hold up the plane.

I am lucky to be alive. Quit your whining. Sorry, had to be said.