The greenhouse gases are going to be there for up to 30 years if we stopped burning everything today.

So we should not worry so much about that aspect of this.

Not sure I understand your logic here Dan Ur?  Because greenhouse gases are so persistent, it is the very reason why we should be worrying about climate change embedded within the context of oil/gas depletion.

In other words, once we see significant enough changes to the climate to cause the political will to shift toward greenhouse gas reductions, will will still only have scratched the surface of what those effects might become in the decades to follow.

I was not trying to imply that we do nothing to reduce our use of OIL, but that in affect it won't matter a hill of beans what we now do.  The damage is already done and the systems are already changing.  We can HOPE for the best, but we should expect the WORST.

 Is not depression and gloom just a great way to spend a day.  (sarcasitic remark).