The next generations after us are facing shit storms. This all boils down to thermodynamics. We took energy at the cost of generating CO2. Taking that CO2 back, aggregating, filtering, converting, storing… Add in losses (be generous and take 50% conversion rates), we will need multiple times all the energy we took over the last two centuries to take all that CO2 out.

When I said decades of spending half our energy budget, I was very VERY generous. Reality is that we might have to be doing that for centuries, maybe.