I can say that I do not use an ATV but that is only because I do not have one. I have used a horse to pull my deer out. I have asked my grandfather about the good ol' days of hunting and his theory is if they had it they would have used it, if thats not true he said we would all still be using flint locks and never even heard of inline muzzleloaders. I can tell you from a winded man in his 20's with a buddy helping him drag a 200# dead weight buck out of the woods and ATV sure would have looked good to me that day.
Just my opinion, I know they all stink.