i think we worry about it because it could affect us one day and no one wants to anything bad to happen to them. by "it", i mean what the world could do to us one day. we think we have control over this world, but it has control over us. and in case you had not noticed, we need it alot more than it needs us. thats the main thing we never seem to grasp. we all wanna save the planet, but its been around a hell of a lot longer than we have and it will be here long after we are gone, so who needs to save what again?
so yeah, global warming, oceans rising, make way for the next ice age. no need to worry or try to fix anything, its all gonna sort itself out eventually. thats something we all need to start dealing with and accepting.