Just about everyone with a cell phone has probably been guilty of texting and driving at one time or another. Some people do it on a regular basis. I know the mindset, believe me. You're like, "I still pay attention to the road and don't do it in oncoming traffic." Doesn't matter. A millisecond is all it takes to get yourself and others injured or killed. For a text? If it's THAT important, pull over.
Be forewarned, this video from the NHTSA is powerful.