Well, it has wings

A fly with no wings is called a walk.

They have many other names other than fly. Some in Latin, some in curses.

In the aussy outback many fly eggs live in the ground, only some species need rotten stuff.
When it rains their cycle begins. About a week or two after the rain they emerge, in their billions (no joke) across the rain affected lands. They live only days to several weeks some species. If you happen to visit a week after rain, you will be their supply of water and food, they hope. Moisture and aroma attract them.
A month later and while conditions allow, others will have emerged to replace the dead, so there is an almost continuous supply. They feed many other small critters, and plants, which would perish without them.
Even in salt pan desert, with weeks of 40+ deg C heatwaves, they will annoy you at sunrise breakfast, and again in evenings till just around sunset. Hiding in the mid day heat, but not all.
Cook so that dinner is served after dark, for less 'extras'.

Flies have 2 wings, and 2 counter balancers, for aeronautical agility.
If it lands on you and you gently blow on it, it grips down a bit, and is slower to jump when you swat it. Gotcha.

In some places flies are harvested and dried and ground to make a flour, to eat.
Yuk. Apparently tastes a bit nutty.

A cartoon I saw: several flies cooperate to take off with a turd.
The comment: 'A motion was passed and carried.'

Well, oddly enough that proves to be difficult to find :/
The fruitfly apparently is perfectly able to withstand a nuclear blast, much better even than cockroach. But cannot find out about the common fly...