Reports suggest that summer arctic ice caps will be a thing of the past by 2020,

I think we are ruled by the oil industry. They have the power and the money to convince us that everything is OK because they are not interested in what is happening for the coming generations. And we know what they are interested in. Who do you think was paying for the TV program about the "Global Warming Swindle"?
It is true that there are natural fluctuations, but the balance is critical and this is the first time in the history of mankind that we are able to upset it.
And yes, I think there are also other reasons for living greener.

All said - still: no harm in at least trying to live closer to nature, to be properly nurtured!

global climate change is a natural cycle of events, However that does not let us of the hook,
we are speeding the process up out of its natural cycle, and will have to deal with the consequences even within our own lifetimes. We really should have more concern for the legacy we are leaving future generations
Not to mention the impact on every living creature on the planet.
It shouldn't matter if we believe that we are causing climate change or not, nor should it matter if we beleive we can halt it, we know that the way in which we live and the pollution industry creates is harmful to health and to the enviroment and for these reasons if nothing else we must find greener ways to live.