Maybe fines will convince you. If not, suspension. If not, jail time.
I don't condone it but some people are gonna text while driving. All else being equal it seems moronically counterproductive to target enforcement at the ones who are doing it while stopped.
People used to rail against wearing a seat belt too, and even now many people see driving with a couple of beers below the belt as totally fine when [insert excuse]. This is a behavioural issue that will be sorted in due time. Media attention like this helps. There is just no excuse for texting or otherwise fooling around with a smartphone when you are behind the wheel. If you need to do something with it, you pull over in a (legal) safe place.