Driving is no joke and should be taken very seriously. Most of the accidents that take place are due to overspeeding. And the reason for overspeeding is mostly due to the following reasons -
Drivers are overconfident and think they can get away with driving fast.
They are in a rush because they are late for the destination.
They Overspeed to impress friends or other fellows.
Last but certainly not least; for the sake of fun.
For the last point - go to a racecourse to test your cars max limit.