Uhh Earth is over a billion years old.. Explain the fossils that over a million years old...
Actually, it's over five billion years old, and even at that, it's made of leftover stuff from even earlier stars.
I can find no justification for believing the Earth is less than a million years old that wouldn't work just as well for it's being only twenty minutes old, or maybe a hundred years.
Earth is either old, really old, or we are all just fancy computer program characters, chasing edibles, and being pursued by ghosts.