If you do break/lose your arrows, you can make more.  You can't do that with bullets.  
 
If you’re planning on making arrows better not have a compound bow. Compound makers tell you not to use wood arrows because they will split the arrows. When I was 20 I tried it and it did split the arrow and part of the arrow ran under the skin of my left arm but it could have been much worse. 
i only own a composite bow.  never liked the compund bow. too conplicated; if it gets messed up in the field, it's impossibel to fix.  Plus, unless you're hunting rino, you don't need 60+ lbs of pull.  a good, sharp head will enter a body just as easily with less force(talk about a double entendre).