Wasn't Roman-era writing mostly on papyrus rather than parchment? As papyrus has a much shorter shelf life when stored in more humid climate like Europe (unlike

Wasn't Roman-era writing mostly on papyrus rather than parchment? As papyrus has a much shorter shelf life when stored in more humid climate like Europe (unlike in the desert where it stays intact), if people aren't actively copying them, anything written on papyrus just get lost.