Horse shit. The planet has never had to deal with 7 billion people and a critical mass of industrialization and attendant effluent.
Those are unprecedented; as unprecedented as the big rock from space that ended the dominance of one species in particular.
And it's fucking dinosaurs like you that stand in the way of doing anything about changing things up so we're not all going to suffer the fate of the T-Rex's.
rooster, You could probably handle a few guests, but if you had more and more and more, with many of them not giving a shit about caring for your place you would start slipping and sliding, erupting, and be getting hotter and hotter, too.