So when will all of this destruction and devastation actually happen?
I distinctly recall hearing about how major cities along the U.S. eastern seaboard would be under water "within a decade" back in the mid 1970s. It didn't happen.
Then we were supposed to be completely out of oil by 1990. It didn't happen.
The next prediction was that the ozone layer would be almost completely depleted by 2002. It didn't happen.
Then we were told global warming would spiral out of control by 2011. It didn't happen.
It gets harder and harder to take these claims from environmentalists, scientists and politicians seriously, when they're so wrong again and again and again.
It's not even a case of efforts to mitigate the problems actually having any effect.
Most of the time these efforts haven't even started by the time the problem has either resolved itself, or been shown to have been a load of bullshit in the first place.
When a scientist says "if the current trend continues, X will happen", media reports it as "X will happen".
What they don't report - and what people like you seem unable to understand - is that the current trend DIDN'T continue because people, governments, nations, actually DID something about it.
So the ozone layer is still here (slowly recovering) because we stopped spewing CFCs into the atmosphere. We MADE SURE the trend didn't continue.
We still have oil because we go to silly lengths and spend ridiculous amounts of money to find and extract more. Fracking, anyone? Oil sands? Deep-sea drilling?
The point many scientists - and more and more regular people, and even some politicians in some countries - are making is that unless we DO something, if we allow the current trend of climate change to continue, it is - sooner or later, but most assuredly - going to make this planet a worse place to live than it already is.
It's not going to fix itself, much like the ozone layer wouldn't have just fixed itself. We're going to have to fix it, and a good start is to stop making it worse.