Hold up to what?
Two of my rifles were bought new in 1957. They have been "well hunted" and not babied at all - there was no plastic trees back then and outside of a few dings here and there the wood is still sound/solid.
While I have a couple synthetic stocked guns now I mostly see them as a way for the mfg's to keep their costs down while solving a problem that really didn't exist - wood stocks are plenty tough enough even for relatively rough use.