Obviously you can use the statistics to make many points and your points I do not dispute. However the underlying reality is that if population growth continues then so does demand for energy. They are locked in step and show no sign of separating. The differences in climate make it very difficult to compare the energy requirements in somewhere like southern Nigeria with Alaska. A low input lifestyle may be very possible in the Tropics but would pose far more of a struggle in Arctic areas. You cannot wave magic wand and change the gas guzzling suburbs of America into self sufficiency plots no matter how many copies of John Seymour's book you distribute.
The problem of global warming has been recognised widely for decades yet nothing significant has been accomplished to remediate the situation. There are schools of thought that warming is already having an impact in terms of storm severity, droughts, melting permafrost, clathrates releasing methane etc etc. How many tipping points are on the horizon or have been passed already? What sort of shock is required to get some action? I do not have any of the answers and neither do any politicians.