I've asked these questions before, but never really got an answer from anyone.
What is the ideal temperature of earth to sustain human life as compared to the global temperature today? If you had control of the global thermostat, would you lower it or raise it? What kills more humans, cold or heat?
Humans have adapted to the current global temperature quite well so far it seems and I suspect they will continue to adapt as it changes. I haven't been convinced one way or the other whether CO2 is a lagging or leading indicator of global temperature.
I've seen many theories on solar system cycles that seem to get zero attention from climate experts. If it were found that these theories could explain climate changes, a lot of experts would be out of a job because we can't control solar system cycles like we can sheeple.
Kevin