I don't think there are deer on Antarctica, or any herbivores for that matter. It would be interesting to wait thousands of years and see what comes around to fill that niche.
You're conveniently failing to mention the millions of people who will suffer and die with no fault of their own. This is not positive thinking, it's privilege and ignorace.
Who knows, in 75 million years, maybe there will be tardigrade descendants with extra legs wondering Wtf happened 75 million years ago to wipe out most life.
Tell that to younger generations in developing countries - they have done nothing wrong and will suffer because of other's actions. It's debatable how much people like you and me - provided you are someone selling labor and consuming averagely living in a developed country like me - can do compared to highly emitting upper-class people, but we certainly can't just accept the consequences of climate change like it only affects us or we are the judges of letting it doom those least responsible but most affected.
We wouldn't be powerless to change, though, if conservatives were not working tirelessly to prevent us from changing. Conservatives are holding the wheel and forcing us off the cliff. And they are mocking us as they kill us.
Yes. As someone on the gulf coast, I fear being without power for multiple hours in the summer one of these coming years, I could suffer heat stroke or actually die.
There are temperature/humidity ranges that make it impossible for any human to be able to cool themselves off through sweating. If we surpass that point and don't have AC, all humans experiencing that temperature/humidity will die after a period of time.
Nobody is safe when the atmosphere itself is lethal to human life.