We'll cling to life like cockroaches despite being so fragile.
Our wealth class has littered and is littering this Earth with climate controlled luxury bunkers to escape the consequences of their own fine work, which will buy some sad bastards the honor of sipping expensive whiskeys in concrete tombs below the scorched surface for a few decades before we finally, mercifully end.
It might be the family of the perpetrators we know like the Bezoses and Musks, but I can only dream it will be their service/security staff that will have murdered them the moment the security doors closed and took their shit.
I can imagine the ruling class to still have their pissing contests with other billionaires from their secure bunkers. Eventually they'll develop bunker busting nukes and everyone will be gone.