https://www.ft.com/content/73650984-135a-11e9-a168-d45595ad0...
"...renewables (including biofuels, waste and hydro) are responsible for almost the same share of energy today (14 per cent) as supplied in 1971 "
We can shave of percentages by stopping eating meat and so on but fossil fuels are still the major culprit in carbon emissions.
From economical point of view it's catastrophe today (just stopping using fossil fuels cold turkey will destroy the economic structure of our civilization) versus catastrophe tomorrow.