As someone who has travelled interstate for work it does get pretty tedious - flights never take off on time so you spend a lot of time just sitting at the airport. I was flying between Melbourne and Adelaide, which was only a 1 hour flight, but add in taxi rides in peak traffic, and all the check-in process it was the best part of 4-6 hours from door to door. If you have already done a full days work on top of that and you are doing it repetitively it gets exhausting. Travel every now and then for work is a novelty - constant travel loses its appeal.