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Until the 1990's climatologists were part historians. One of the reasons for the global cooling scare of the 1970's is that the prior warm periods were common knowledge among even amateur scientists. And everybody knew that life in the warm periods was great (higher crop yields, more predictable rain patterns, less deaths by plague) than life in the cooling periods (more starvations, decades of droughts followed by damaging rains, 1/4th of the world dying from the Bubonic Plague).

The political cult told us that the Modern Warm Period was ending prematurely and that we'd enter another cooling period soon. That lie didn't hold water long because it was obvious we were still warming. So they waited a while (until the 1990's) and changed the climate farce into warming being a bad thing, hoping that people would have short memories about warming periods being good things, or that prior warm periods existed at all. If you look at the graph, from the low point of the Little Ice Age to today we have done a lot of warming. But it's no different from the warming done from the bottoming of the Greek Dark Age cooling period to the Roman Climate Optimum.

And if you look at history, you'll realize that many atrocities were committed during the cooling periods. This is, in part, because normally kind leaders change their tune when their people starve to death and/or die out from plague. Desperate time bring desperate measures. For example, when Africa experience mega-droughts during the Little Ice Age, black nations/kingdoms/tribes took over land from other blacks to get some more food. What did they do with the people in the conquered lands? Not keep them and feed them -- the conquerors themselves were starving. So they killed them or sold them into slavery. No Little Ice Age would have meant a lot less supply on the African slave trade. The same with the demand side (white folks and Asians and Middle Easterners and Africans needed extra workers to work the land to squeeze out more crops in an era it was hard to get crops from the land). The same with white slaves taken to north Africa. The same the Huns having to expand southwest during the Dark Age cooling period (an event that resulted in Anglos and Saxons being forced out of modern day Germany) in part because the Huns' crop yields were down.

Basically, people in both the recent past and distant past knew that the warm periods were good times to be alive (at least from a climate perspective). But the political left has made a cult over the past few decades out of hating the Modern Warm Period