I used to work at an international airport. Once, when a plane arrived they discovered that one of the passengers had likely died of natural causes before landing. They had him removed and the doctor obliged by declaring him dead on the jet bridge, rather than on the plane.
Apparently, if a passenger is declared dead on the plane, they have to do a thorough clean. This would have caused a delay. Delays cost money. Thanks to him officially having died on the jet bridge, no thorough clean was required. The cleaning staff removed the excess rubbish, and some lucky passenger unknowingly got to fly in the dead passenger's seat less than half an hour later.
I suppose I should have been more appalled, but this happened for a low cost airline. I never felt too much sympathy for passengers who paid significantly less for their flight, often a flight that could have been a train ride that didn't kill the planet, invariably treated ground staff like shit, then complained when the budget airline offered them budget service.
Not that the business class passengers were much better. Like the VIP who deliberately shoved a pregnant colleague with his trolley, but wasn't banned from BA, because he was a gold member or something stupid like that.