And human civilization entirely sprung up during it, all of our nations, our cities, our pastures, our lives are built on the ice age. We need to start cooling the world down and we're doing the opposite

Longer periods can be called paleoclimate. As you may have noticed, most types of humans did not exist in previous climates, and we are unfamiliar with the conditions of those time periods, much less if we were to bring them upon ourselves in a period of time that isn't even capable of being shown on the chart you've chosen to use.

Apparently humans can't survive outside of an ice age, then. Maybe we shouldn't end it prematurely.

A better time range would be the average species lifespan of the plants and animals we eat. Too short a range highlights noise; too long a range highlights unrelated data.

Okay? Let's keep it that way then I suppose.

I'd trust such data a lot more, from any other source.