"My boss wants me to go with him on his Titanic submarine holiday."

Also, in my experience, people are pretty evenly split on whether or not they want to travel for work, even if the destination is fun. A lot of people have child care commitments or would otherwise just rather stick to their schedule.

And this is for salaried professionals who would be getting their own accommodation and expenses paid. I've seen people turn down business class flights and 5 star hotels on the company dime.