I blame the system. If they made it a $500 fine for the first offense and an additional $500 added to the fine for every conviction thereafter it wouldn't be long before few people could afford their expensive phones. But an additional benefit would be lighter traffic due to a lack of funds to buy gas and thereby save the planet.
I know I personally can't take a 5 minute ride without seeing someone talking on the phone or worse yet texting. For an incentive to enforce the law, let the cop keep 5% of the fines and I'll bet the balance would still pay his yearly salary.
Then again there would be more cops writing tickets and more politically correct people still alive to populate the world. Hmmm maybe we need more thought on this subject.