Because it's not a solution. If we go down that road, we'll have no reason not to keep burning fossil fuels, pushing more and more CO2 into the atmosphere and

Because it's not a solution. If we go down that road, we'll have no reason not to keep burning fossil fuels, pushing more and more CO2 into the atmosphere and acidifying the oceans. And that's ignoring the fact that the global climate system is just too damned complicated for us to safely move from accidentally modifying it to trying to deliberately modify it. If I believed it was a short-term stopgap while we get our shit together, I might be able to get onboard with the idea. But that ain't how humans work.