every time I go anywhere out of state. Most my bow hunting in state is about 40 minutes from my house so if anything goes wrong with my bow that hunt is basically screwed anyways...If something happens t my bow at home etc. I have one so I don't have to be at the mercy of a bow shop or part delivery. My out of state hunts are anywhere from 6 to 24hours away so Always have my backup. Just like guns....I can not believe how many people don;t even have an extra gun let alone bring one on a hunt with them.