Life on Earth has never been wiped out, no matter how bad it got. And we're not even talking about glaciers over every continent bad (humans survived that), jus

Life on Earth has never been wiped out, no matter how bad it got. And we're not even talking about glaciers over every continent bad (humans survived that), just less fish and some other things. Not even always making them extinct, just less of each species. You're assuming that if we carry on without worrying about it, we will make important species extinct. That's only an assumption and not obvious.