Texting Ban

I don't get this texting ban that passed today. A texting ban only for drivers under 18? Apparently, 18 is the magical age when you're no longer a threat to others. It seems like every time I've been cut off in the past couple of weeks, or witnessed a dumbass move on the roadways, it's almost always by some jackass that has their cell phone in their hand. Guess what, you're phone conversations/texts are not that important. It can wait until you're parked. Even though it'd be nearly impossible to enforce, I say ban all cell phone activity when driving. At least it sends some sort of message.