And yet you probably never 'postpend'. And why do we computer people have prefixes and postfixes, when the world was just getting by fine with prefixes and and

And yet you probably never 'postpend'. And why do we computer people have prefixes and postfixes, when the world was just getting by fine with prefixes and and suffixes. (I realize we did have to invent 'infix'.) And why is it antebellum and pre-war, but postbellum and post post-war. Why does no one ever use postdeluvian and only antediluvian? sigh