Unfortunately, environmentalism has become a religion for some.  

The eco-Nazis on that end of the spectrum assume everyone who does not agree 100% with them must be demonized.  It is the environmental version of our political party system. 

Compromise is anathema to too many in our society, and not just on this issue.   Everything becomes a zero-sum game.  

The sort of compromises which were possible to create the National Park system are no longer possible.  The wolf issues in Oregon almost got there, but then that was taken down as well.