Madpaddy - Cheer up - our grip on the planet is far more tenuous than it seems.
Being at the top of the food chain means we are also the point at which the buck stops. We won't get anywhere near "taking out the last stick of timber" before getting hit broadside by a wave of consequences of previous actions, destroying our ability to continue our irrational culture of "Consumption to demonstrate superiority".
Quite when and quite how suddenly that change comes is an open and imponderable question, but it is coming.
Given our urbo-centric culture's ability to utterly to ignore warnings as being 'unproven' (!) and unwelcome distractions from decadence, we are already enduring massive hits without a global change of course. Those hits are already taking the edge off our rates of consumption (viz hurricane Ivan) and they are intensifying exponentially. They will, in company with peak oil, end the growth of consumption and then reverse it inexorably.
For example, I've seen no discussion of closing the world's battery chicken farms on grounds of bio-hazard, yet they are perfect bacterial mutation facilities given that they rely on widespread use of anti-biotics to cull conventional strains of disease. One result is the so-called Asian Chicken flu that is now endemic in various parts of Asia, and has recently crossed the threshold of being transmitted person to person. Given further mutation of its virulence and contageousness it could easily be "a consequence of past actions" that terminates the present mechano-culture rather swiftly.
That said, life goes on and is there to be enjoyed. Yet with knowledge of this society's stupefied fragility, for me what is enjoyable changed not only to a simpler passive appreciation of natural beauty and the company of friends, but also to an active delight in effective campaigning on key issues of sustainability (be that climate change diplomacy or digging the veg garden). I note that none would be as enjoyable were I not putting time into the others.
So be assured that our present culture won't reduce the planet very much further, particularly if we pull our fingers out and promote razor-edged precedents of sustainable ways of life.
regards,
Backstop





JK, but i'm pretty confident unless an all purpose substitute is found the economy and my chance of being employed suck. 