One thing that I think is overlooked in this thread (though I didn’t read it all) is that carbon capture/sequestration is not incompatible with burning fossil fuels. You get the energy by breaking bonds of (somewhat) complex hydrocarbons, but it takes less energy than is released to capture/sequester the resulting carbon (at least theoretically/for some methods). Therefore there is a possible future where energy could come from fossil fuels without CO2 release.
There are other reasons one may not want energy from fossil fuels, however.
There are other reasons one may not want energy from fossil fuels, however.