George Carlin sums up a lot of my current thinking:

“We have the conceit to think that somehow we’re a threat!?”

Issues like climate change are indeed definitely going to affect our way of life. But to the unsentimental Mother Earth it is insignificant if she loses the polar bears. We should keep in mind that we are a blip and will remain a blip. We are more insignificant and pointless than our arrogance is willing to accept. Hold on to your causes if it makes you happy, after all that should be our only aim. Break your tethers as best you can. I am pointless and insignificant–how liberating!