Jessica!
Thing is, Pluto doesn't care.
I think the whole thing is so cool (not only because I got to TA about Newton's universal gravitation law on the very day the whole thing was published. Not even because I got to explain gravitation as HoYay, though I didn't use the exact expression, of course).
How the way we describe the universe is something that we make up. The universe, just like ita said, doesn't care. It would spin and roll and do whatever it does regardless of how we list it, try to interpret it, get used to calling it names or change those names. And yet, it is important, to us, at least. It doesn't only shape our understanding of the world around us, but also helps us learn how to master it, to use those facts adn rules we learn in order to play with them, to build things based on them, to study even further.
Oh, my, I'm such a geek.