I have bluetooth in my truck and motorcycle helmet, and I do answer calls while driving & riding (hands free). I don't always do it, really depends on the traffic/weather conditions i'm in at that time.
I ain't no saint though, i have in the past held a phone to my ear while driving, but since i got bluetooth, i haven't. And, I have in the past answered a text with, "brb" or "driving" while still moving, but now i just ignore it. Seen too many accidents, that were texting related, that got my attention, and changed my attitude towards it.
I do believe they have recently made it illegal here to text & drive, but not sure what the current hands-free law is. However, i see Sheriffs & State Troopers on the phone, more often than i can keep track of, and i've even seen a few texting while driving also.