It seems to me that the real question is of energy in vs. energy out.

Is the atmospheric energy output directly parallel with the rise in solar/cosmic emissions? If the carbon content of the atmosphere were reduced, would this output change?--in which direction? Is GW a fact as we know it? Is global temperature rising? Do the facts as we know them tell us that we should do what we can to reduce all of the contributing factors? Which of these factors would you suggest we address first?

My personal factor is atmospheric water vapor, which my company is currently extracting to provide potable water where there is either none or not enough. Don't just stand there arguing, do something!