I used to do a lot of varmint shooting and personally burnt out several barrels on my rifles. The rifle's barrell is what takes most all of the abuse, much like the limbs on your compound bow It IS much easier to replace the limbs on a bow as compared to re-$-barreling your 220 Swift and 17 Remington like I did[:@] Plus bow companies warranty the limbs and rifle companies won't replace shot out barrels
I know of several shooters that claim to have over 10,000 shots on their bows and are still shooting like new. Archery equipment is really pretty durable even today with the speeds we're getting. The only limb problems I ever had in the last 33 years of compounds were with PSE's of the 80's