[b4me]

so if they were ruined by climate change how come we are here now, shouldn’t the climate be so much more worse?

I would think this helps show that the climate has it’s cycles it’s all ok, just a little rough at times but all cyclical.

[Cronos]

It's not all cyclical but it is also not solely caused by humans. The desertification of the Sahara for instance took place millenia ago but millenia in the future it may be grassland again.

While it is cyclical, it is over such vast periods of time that it is not "all ok"