I don't think you would have to store the carbon as wood forever. We need to get it out of the atmosphere ASAP but it's still a valuable resource. Even if we

I don't think you would have to store the carbon as wood forever. We need to get it out of the atmosphere ASAP but it's still a valuable resource. Even if we don't wind up turning it into diamond and using it as a fundamental construction material or something (nod to "Diamond Age") and still want to keep it in organic form in the ecosystem at large, we have time to convert it into herds of mammoths and vast forests or whatever, once we get it out of the sky.