It will slow global warming which will slow the negative effects of global climate change which are already being observed and measured in many ways you are already aware of. And you don't need to shout. I remembered my hearing aids. But you already know that, so why are you asking?
It will slow it?
So you can pat yourself on the back while you can die in peace yet throw the world in a depression?
Again how much is it man made and a natural variation?
Why would it cause a world wide depression? Are all these countries' economies going to go belly up from switching to renewable energy sources? New technologies and massive changes like where we get our power will of course effect our economies. How that is managed is up to us, though, isn't it?
Another thought: At least we can survive a depression. Can we survive uncontrolled rapid climate change?
Take a look at the solutions that are being promulgated to "control" the temperature. They want the entire world to change over from fossil fuels to "renewables". The problem with that is renewables are unreliable. They also want Africa and other third world regions to be held forever as third world areas. They don't want them to develop even though the evidence is overwhelming that as countries develop into First World nations they embrace ecology and pollution control.
They also want to take people out of the suburbs and surrounding countryside and condense them into huge apartment buildings. Single family homes are considered too wasteful except, of course for the very elite. Want to take a flight to Hawaii for vacation? Forget it. Too costly for a mere peon like you when you take into account the various carbon taxes they wish to enact to prevent people from travelling.
How about taking a car to the Grand Canyon? Nope. No gas powered cars are allowed, and guess what there are no charging stations available either. So, the elite will be able to enjoy those areas without all of you smelly peons.
Take a look at every solution they propose and it consists of crowding people into huge buildings, preventing them from travelling and taking all of their money to pay for this new utopia. Great for the elite, but crappy as hell for the middle class. Oh, wait a minute. There will be no middle class! Problem solved! There will be a small ruling elite and the masses. The smelly masses.