I agree with ricky, they look tastier on those survivor shows than they really are. The taste is not what I would call a delicacy. Problem with giving them their space here is southeastern, Oklahoma is that you are generally on top of one before you see him.
People who don't spend a lot of time in the woods, wouldn't know the rattling sound if they heard it, and for those of us who are a little hard of hearing, the rattle doesn't help us much anyway.
I don't believe in killing every one I see, as they do have a purpose in the eco-system, but it sure wouldn't hurt my feelings if they blew a horn instead of rattle.