I feel strongly both ways lol. It does drive me nuts when people slow their roll and then you see it's due to the cellphone. However, I don't know that taxing our local pd's with yet another thing to monitor is the answer.
In a few years I foresee the majority of vehicles equipped automatically to be hands-free. That cost for safety will be passed onto us the consumer. The majority will pay for the irresponsibility of the few which is how it works for most other safety options put in place in most other areas of our lives.
Common sense is no longer the rule.