I mean, you can’t really say that we’re going to drive ourselves to extinction, until we’ve been driven to extinction. Most things people list as likely to do this, climate change, nuclear war, are things that could conceivably do so, but honestly aren’t likely to. Destroy civilization maybe, but that just takes disrupting supply lines hard enough. Extinction means nobody, anywhere on the planet survives, even if it’s some little pocket of people in some corner of the world whose climate is good after warming is considered and which isn’t a target of any nuclear arsenals, because in a number of generations such a little pocket can grow to repopulate the planet again. It’s not an impossible thing for sure, but killing off a species capable of surviving in almost any climate zone found on the planet, with the ability to manipulate the growth of it’s own food supply, and adapt new tools actively in response to problems within a single generation, is a difficult task.