We should be throwing everything have at solving Nuclear Fusion too. Fossil fuels are a limited resource and the energy return on energy invested is only going to get worse. We need to use this short period of easy abundant energy to find newer sources of energy (i.e. nuclear fusion, modern nuclear fission (breeder reactors and thorium, etc.) and deployed photovoltaic cells, hydroelectric dams, geothermal plants, electric transport and industry, etc.
We have the capability, and yet decades of neoliberalism have made governments and the public terrified of any medium to long-term investment. So we've chosen a new Dark Age instead.