Pluto is NOT a planet
Decades ago, before all this furore about Pluto came to light, I remember having a discussion with my primary school science teacher. He'd taught us about the "9 planets" and also about the asteroids Ceres, Icarus and Vesta. He talked about asteroids and how they orbit differently to planets (ie highly elliptical, out of the ecliptic, crossing the orbits of other planets) After class, I (being a science geek even then) asked the teacher what made Pluto a planet and not Ceres or Vesta. After all, Pluto's orbit is off the ecliptic and it crosses Neptune's orbit. Yet Ceres orbits on the ecliptic and doesn't cross any planetary orbits, but it's still an asteroid because it's part of the asteroid belt. He told me that he really thought of Pluto as an asteroid himself, because it was part of the Kuitper belt, but the books called it a planet, so that's what he had to teach.
Suffice to say, I adopted his point of view and since that fateful schoolday back in 1978 I'd always maintained that Pluto is an asteroid and that our solar system has 8 planets.
When the IAU announced the official demotion of Pluto recently it was like a lifelong vindication. I felt like screaming "I told you so! I've been telling you all these years Pluto isn't a planet! I was right all along!" I rejoiced that this obvious fact had finally been made official. And I was aghast at all the idiots who went bananas over it! When I saw a class full of kids wasting time making "save Pluto" posters, the only thing I could think was that if I'd had a kid in that class, I'd have pulled him out of it immediately.
Pluto is NOT a planet. I've said since childhood that it is not a planet. It's space debris, part of the Kuitper belt surrounding the solar system. Now that the scientists have finally made official what anyone with primary-school level astronomy should have known in the first place, GET OVER IT ALREADY!