"Total annihilation" may be a bit far-fetched, but what we are much closer to is global war, death and suffering for you, me, and everyone we know.
Just to cover one angle (IMO most likely one): reduced living space (sea rise) and food shortages will cause massive migrations. Think how the whole EU went basically insane over a bunch of refugees from Syria (and the aftershocks still threaten to shake it apart). Climate-change induced migrations will be much larger, and this time around actually backed by countries people are fleeing. Wars are likely. Proxy wars are likely too. And nukes won't be off the table either.
Even if you live so far inland that waters can't get to you, people will. And if you survive that, then lack of people will get to you as the global supply chain stretches to a breaking point and suddenly no one can make anything as all the components came from China. The lifestyle we're all used to depends on global-scale systems with single points of failure.
Just to cover one angle (IMO most likely one): reduced living space (sea rise) and food shortages will cause massive migrations. Think how the whole EU went basically insane over a bunch of refugees from Syria (and the aftershocks still threaten to shake it apart). Climate-change induced migrations will be much larger, and this time around actually backed by countries people are fleeing. Wars are likely. Proxy wars are likely too. And nukes won't be off the table either.
Even if you live so far inland that waters can't get to you, people will. And if you survive that, then lack of people will get to you as the global supply chain stretches to a breaking point and suddenly no one can make anything as all the components came from China. The lifestyle we're all used to depends on global-scale systems with single points of failure.