Because I lose a lot of 'em!! I also happened to lose 2 muzzy practice blades and the muzzy "head" itself. So now I have 1 practice arrow with a field point. The most arrows I've lost at one time was prolly around 4 I think. So, it's a good thing that arrows are plentiful, or I would have invested in a metal detector; oh wait, I have used one to find arrows before...