Or you could just say that the rules are broken.
If you've ever used a bow in your life you'd know that an arrow of even
moderate quality is a lot sturdier that the 3ED rules make them seem. I mostly do target shooting, so I don't keep any stuff behind the target that would mess up my arrows(just a sheet or two of plywood), should I miss, but they still get damaged every now and then.
EX. Back in the day, I had a crappy hay-bale target stood up on some cinder blocks. If I shot too low and hit the blocks, the arrow would sometimes get dulled and sometimes be perfectly O.K. Sometimes they riocheted and flew all over the place(I still have a scar on my left arm from when one arrow did a 180

), which was not too much fun.
My target was backed by 1 1/2 inches of plywood, and the arrows commonly pierced all the way through (you'd be surprised what a recurve bow can do) the hay target + plywood. I'd say that's more or less the equivalent of piercing some creature with a thick hide and doing a fair amount of damage. And they were only rarely damaged.
ANYway, the arrows I use are aluminum, and if I'd have to stat them up, I'd say 10% damaged on a hit, 5% on a miss.
With what little experience I
do have with wooden arrows, they get damaged about twice as often, 20% on a hit, 10% on a miss. (I use these rules IMC)
Now if you were to spend a little bit of cash and get some mithril arrows made, I'd say you'd get 5% damaged on a hit, 0% on a miss. Only broken if you roll a critical failure.
I'd also rule that since damaged arrows
are salvageable, you can role a Craft: Arrow(Fletcher, whatever) check DC 15 to repair the arrow, if failed, it becomes effectively a -1 to attack arrow.
There ya go.