Well, we're still in an ice age. Have been, here on Earth, for over 3,000,000 years. We've has a few interglacial warm periods, like now. Last glaciation period we were down to about 4,000 humans living in Africa and all the "megafauna" except whales died off.
Clearly, warmer is better for life, and, btw, CO2 has been as high as 3,000 ppm in the atmosphere, and there has never been a "runaway green house effect", and during Dino period, 93,000,000 BP plus, CO2 was at up to 7,000 ppm, andSTILL no "runaway green house effect".
TERMITES give off more CO2 and methane than all humanity including industrial CO2.....yet the loonies are not suggesting we kill all termites.....