I do agree that climate changes naturally, but not at the rates we are seeing in the industrial era. I think that the billions of humans burning stuff, putting fertilizer in the oceans, plastic in landfills, etc. must be doing
something. The hole in the ozone layer did start closing after CFC use was restricted. They have a shorter life cycle in the atmosphere than other stuff so the results of a change in output were easier to see.
That said, I still like driving the 911, MFI and rich mixture and all.
The bigger issues are things like coal power plants putting all that toxic mercury and such into the air and ocean. That is why all the warnings on seafood like Tuna steaks, swordfish, etc.