This is the same illogical nonsense he came up with during 'Prometheus' (except with less Jesus).
Exactly how were we "killing the planet" two thousand years ago?
And how the f**k would destroying the entire planet's ecosystem in such a catastrophic way be better?
Humans were no more "killing themselves" than any other species (probably a good deal less so, if anything, since communities of people realised they needed to band together to survive harsh times, like bad weather). I don't know what he means by declaring we couldn't "settle down", either, because we had huge empires existing and most tribes had to settle down and farm if they wanted to survive.
Really, Scott? If someone's acting immaturely, the logical thing to do is to f**k the planet up beyond all recognition? That, right there, is a case of species acting both immaturely and irresponsibly.
Whenever he says this stuff, I always think of this guy...