Pluto is not a planet. It has not been one since 2006, unless you want to say there are like over 50 planets in the solar system.
If it was once considered a planet, why would they bother changing it? That's the thing I don't get. If it's got the attributes of a planet, then it should be considered a planet. And yes, I WOULD like to say there are over 50 planets in the solar system. Having more planets being considered planets gives us more places for discovery, and the smaller the planet is the easier it will be getting all the data from them that we need.