I think that the main reason people that like the Wii attack the PS3 is because we are insecure. We love our console, but we don't really know how it functions. We haven't seen anything eye-popping, even on the gameplay side. I think alot of us, (Not me!) are worried that we "made the wrong choice." We all want to see the Wii win. We want Nintendo to reign supreme, but there is one obstacle. That obstacle is Sony, and its infamous PS3. To deal with this, we attack it. Me must make ourselves believe that we don't want a PS3, because we just spent so long hyping ourselves up about the Wii and punching our cousins because they mentioned the word playstation one day. So Wii do the only thing Wii know how to do, Wii fight to defend ourselves against the pain of the millions of particles emmitted by the Playstation 3, and the ever evil, Ken Ku.... Sony!
That's just my take on it anyways!