Repeated recoil and backcountry/mountain/horseback hunting tends to be hard on scopes. If a guy is simply carrying a scoped rifle into the shooting house and back, and limiting the recoil exposure to a box of ammo a year, any scope will likely last for years.
What percentage of Leupold users*** who have never had any trouble at all have round counts on them in the thousands? BTW, I don't mean on top of ten pound 223s either.
***I have used a bunch of Leupolds over a long stretch of time. I still use quite a few. I thought I'd mention that before any irrational fanboy decided to brand me an uninformed "hater".