Why is important to know how to multi-task while driving?

Number one. The only reason to multitask while driving is when your being observant of you surrounding and using the factory controls such as turn signal I do not advise doing any of the following while driving, Eating, drinking and beverage, talking on phone, putting on makeup that kind of multitasking will distract you from the road and that can cause accidents do what I do when I drive just imagine that there is a baby in every car sharing the road with you cause there is a possibility that there is plus you will drive safer.