Why People want to eradicate Islam?

Why it seems that lots of webpage and blog saying that Islam should be eradicated? I thought eradicating is only done by something related to evil. Even we considered evil to eradicate or eliminate some species in this world, and when it comes to eradicate a religion, i would only say a devil evil would do that. As a human, i would not ever feel to eradicate other religion. I wouldn;t think on eradicating a religon even if they shouldn't be exist. Because we are talking about a millions of human heart and belief.