I just thoroughly disagree with all this doom and gloom.
While I am quite sure that the prediction that we will not make this target is correct... Seriously, how often in history have scientists and/or "scientists" missed the mark on what precisely would happen if X was changed by Y in any given sufficiently complex system?
And I can't imagine many systems more complex than weather.
What I expect will happen is indeed a rising of the sea levels and climate regions will shift. That means change for many people but it will be somewhat gradual. It will be nigh instantaneous in context of an ice age but to us silly humans who don't even usually live 100 years, it will be a lot of time. Less and less people will move to the coast and more and more away from it. It's not like one morning the news will tell us of 100 million drowned due to the rising of the sea.
Russia and Ukraine might no longer be Europe's bread basket. Meanwhile, other regions that used to be really crap to live in might suddenly get a boost.
To me, any scientist who calls doom is 99% trying to get grant money. The current state of the scientific comunity is unprofessional and unethical to a degree that I blame nobody for not taking "scientists" seriously anymore and that is not even accounting for bad journalism in reporting.
Lastly, there is this thing about humans: We are lazy by design. It is a survival instinct but like many others, it certainly isn't foolproof. Sometimes a survival instinct causes death. It is only beneficial to the species overall, not individually. From that comes this situation that for a human to start moving, a certain threshold... a shock moment must be reached when he can no longer ignore looming consequences. For that he must already feel them.
Humanity will move pretty quickly once it has actual, tangible incentives. You can bemoan this all you want but the fact of the matter is that climate change doesn't hurt yet. Not on a scale large enough to matter. And people get used to this status quo so the next step will also not matter.
I don't realistically see and end to the species. I don't even see a culling as being realistic.That doesn't mean I don't foresee millions suffering over the next decades.
But honestly? Suffering is part and parcel of life. It's not like humanity didn't suffer at any given point in history so nothing new there either.
We will rise, we will adapt and we will go on.