The reason they are not popular is that we don't have a practical power source. Flight times are measured in minutes. And practical ones that could be used by a

The reason they are not popular is that we don't have a practical power source. Flight times are measured in minutes. And practical ones that could be used by anyone would be much larger (think VTOL hang glider, not Bobba Fett). Even with a practical power source, you know have an immense amount of energy stored right next to your body. You need to be able to direct said energy in a safe way. Good luck. There's only so much airbags can do. Imagine where you would locate those airbags. Cant be pressed against the body either (airbags can cause horrible injuries). Parachutes won't help close to the ground.