Nature and us

Having spent most of my adult life in the polar regions of our planet, I've come to one simple insight:
Climate change is, without doubt, the biggest environmental threat mankind has ever faced. After years of knowlege but hesitation, the progress we make is not happening fast enough, and this makes me angry.
Time is short!

Only after the last tree has been cut down
Only after the last river has been poisoned
Only after the last fish has been caught
Then will you find that money cannot be eaten.
                       
Ecological movement of the 80s

Most of us are not guilty of any bigger crime towards nature. But we are careless and have a hard time changing our ways, just because we are used to it, just because it's convenient. We hardly think about the energy we use, even less about the resources that have been put into the things we buy. We love to travel around the world, ignoring the negative impacts of it and (absurdly) glorifying the diversion it brings to our boring, somehow unfulfilled everyday life. We try to sooth our bad conscience by liking some projects on Facebook and giving small amounts of money to animal-friendly organizations, but we are not able (or willing?) to cure the problem at its core. Which, honestly, is the easiest thing to do, starting right at home by changing our lifestyle bit by bit. There's so many ways to positively influence one's own relationship with nature: the opportunities are nearly endless!

If you seriously care for nature then you have all the reasons in the world to start questioning your way of life,
but in a positive, constructive way. I personally try to combine my needs with a "good purpose" and ask:

    What good does this do?
    How can I at least try to change things, given the opportunities?
    What would be the best compromise in order to have the smallest possible negative impact on nature,
    whilst trying to stay sane and happy?

To me, the luxury of a free, wealthy and healthy western lifestyle comes with an ethical responsibility towards nature and the future of our planet. We need to take care of what we love, and we need to act now, before it's completely too late. Just as a native American saying states:

                                          The earth does not belong to man, man belongs to earth.