I can assure you that at least I need my 5 days off between tours to keep my sanity. Sometimes I only get 4 days off, because I voluntarily work more (to make some extra cash) and I can feel it. 4 legs in our business jets are more draining than 4 legs on an airline where everything is prepared and ready. Of course, I do agree that 5 off days are great and are hard to find with the average airline and that's why hardly anyone leaves Netjets.