I don't understand your first "sentence". To clarify, I'm not against cleaning up emissions now. I was just saying that if we arrive at the conclusion that fossils need to stay around for a long time then we should do a better job cleaning them up. If a miracle source kills fossils in 30 years then great. Problem solved.
If fossils are indeed all we have then other than sticking with them, what would you say is the solution? Eliminate them anyway and watch billions starve?