As I've said, climate change mostly isn't my beat. And I'm even a slight skeptic, not about climate change itself, or that humans are largely responsible, but about the idea that climate change will be inevitably catastrophic instead of simply extremely costly. Extremely costly is still a huge problem! And extremely costly isn't just referring to lost real estate, it'll be extremely costly in terms of lives and quality of life for many people. But, uh, this isn't looking good...
I'm aware that catastrophic scenarios are possible, if not necessarily Day After Tomorrow level catastrophic. But in any case, extremely costly is reason enough to be concerned.