TO: “dunno”
I disagree.
I don’t think there are many things that are AS MUCH of a distraction while driving as texting is.
Don’t forget, – to text you have to be LOOKING at the keypad (NOT the road) AND using your hand/s on the keypad (NOT the steering wheel). – Not to mention that your mind is distracted as well.
Also, unlike the distraction of adjusting a radio, for example, which is just for a second or less, texting can keep your attention for several seconds (at least) – definitely long enough to cause an accident.
IF you are right, and there ARE other activites equally distracting, then the answer is not for texting to be legal, but for those other things to be illegal as well.