Thanks Iain.
I accept that we are dependent on oil for the very surival of our civilisation, such as it is.
I accept that there is no viable alternative remotely in sight.

If this field were undiscovered, that would not be the end.
We could afford to leave the oil in the ground a bit longer in the hope that technology of extraction becomes safer, or an alternative source of energy becomes available.
It is not yet a last resort.