We're talking massive equatorial glaciers. Or that some Vaucluse residences and a few island republics will have to be visited by submarine. Increased heat means more plant growth, and more food. That's what greenhouses are all about. Cold is bad.
Ice means death.
Greenhouse is good. So, we should be pumping greenhouse gases into the atmosphere as fast as we can - even though there is probably not a real lot we can do to affect temperature trends on the planet. It's overreaching hubris to think so, according to those who should know. We are quite likely to go back into another ice age whatever happens. We could easily be near the peak of warmth right now.