Because there is little benefit to the economy if we just dream up ideas with no intention of implementing them, and then sell (for millions of dollars it seems) a piece of paper preventing other people from implementing the idea.

I don't agree with your argument that any action that lies within the law is beyond reproach. A person who is incredibly rude is not breaking the law, but they're kind of a dick.

If you don't like people calling patent trolls "trolls", lobby the government to change the free speech laws, but don't blame the people who utilize those free speech laws to lament the broken system. These companies are rotten trolls and they're ruining innovation in the United States.