Maybe he was in a state of extreme despair, such as having financial problems or relationship issues.
One possible reason could be depression or mental illness. People who are severely depressed may feel hopeless and see jumping as a way out of their pain. Another reason could be a spur - of - the - moment decision during a very stressful situation, like being chased or in a state of extreme panic.
One possible reason could be depression. When a person is deeply depressed, they may feel hopeless and see no way out other than taking such a drastic step. Another reason might be some kind of financial crisis that seems insurmountable to them, like being in huge debt with no foreseeable way to pay it off.
One reason could be to show extreme generosity. If the man has adopted or taken in a large number of children, it could be a story about his selfless act of providing a home for kids in need. For example, he might be a wealthy philanthropist who wants to make a difference in the lives of orphaned children.
One possible reason could be mental distress. He might be suffering from depression or some other psychological disorder that made him feel hopeless. Maybe he had financial problems, lost his job, or had relationship issues.
He might have landed on something soft like a big pile of garbage or a large awning that cushioned his fall.
He might be confused. 811 could have been the first number that came to his mind in his excitement. He probably just wanted to share his Bigfoot encounter immediately and didn't think clearly about which number was appropriate.
It could mean a man jumps from a height equivalent to 40 floors. Maybe it's a very dangerous or extreme act, perhaps in a situation of distress or as part of some extreme stunt.
It could be that the flies were causing a disturbance or were in an area where they weren't supposed to be. So, he decided to take action and kill them.
Surviving a 9 - story jump is highly unlikely. When a person jumps from such a height, the gravitational potential energy they have at the top is converted into kinetic energy as they fall. By the time they reach the ground, this kinetic energy results in a very high impact force. Most of the time, this force is more than the human body can withstand, causing severe damage to bones, organs, and often leading to immediate death.
It could be that the elevators are out of order and he's in a hurry to get out of the building, so he chooses to climb down 15 stories. There might be an important meeting or appointment he doesn't want to be late for. Also, perhaps he just wants some adventure or a physical challenge, although climbing down 15 stories is quite a risky adventure. He might be a thrill - seeker who likes to do extreme things.