1. Is the plane on fire? No?
2. Is the plane in imminent danger of crashing into something... like a mountain or other plane? No?
3. Is the plane out of fuel and going to have to do a water landing in the middle of the Florida swamp? No?
4. Does someone have a gun to my head? No?
5. Is the plane on the ground? No?
Ok... not on fire, not about to crash into something, not about to crash period, no gun involved and NOT on the ground.
So why the hell would any sane person actually volunteer to jump out of a perfectly good airplane?