I was never in favor of Pluto's demotion.
Pluto is half the size of the US, Earth's moon is even larger than Pluto. But this is still cool, I can't wait to see what this rock looks like.
Here's a woman who thinks size does matter.
Problem with this issue is if planets too small aren't planets any more, than what about our Sun? Is it a star or a dwarf star? If you imagine the very largest stars filling your entire screens, our Sun by comparison is about the size of an individual pixel. So do we demote our Sun as a "star" because compared to others it's too small?
On the flipside of things, if we say Pluto's a "planet," then what about the other 7000 Kiper Belt objects? Are the ones orbiting the Sun also planets if sphereoid like Pluto?
I think 'dwarf planet' is fine. In the big scheme of things, who cares? Not like whatever it's called matters in real terms. Still gonna study it. Heck, put an asterisk by the term dwarf planet*. And a little footnote below reading like, 'planet' until 2007 or whatever it was, 'dwarf planet' from then on.