I don't leave home without mine. I feel I owe it to the game I am hunting to have predetermined distances well before the shot ever takes place. If I am rifle hunting I still take it for the same reason sometimes like on the farm there isn't a landmark to judge so if the deer is relaxed I hit it with the finder just to verify even though it's not as big a deal to be off a little judging the distance until you get past 300 yards.