As long as everyone thinks they are an above-average driver, and think that multitasking means you can provide 100% attention to all tasks you are attention, fools will do things behind the wheel.
Drivers eating, reading newspapers, shaving, applying makeup, talking while facing a passenger, talking on cell phone, texting, surfing the web...I've seen all that on the interstate in the past week.
Distracted driving increases then chance of accidents. Certain activities are worse than others, with texting being the worst. Unfortunately, LEO's are more interested in speed traps than on stopping reckless/distracted driving. So it will take huge amounts of public education, and even then, it will still happen (despite lots of education and PSA'a, people still drive drunk).