Literally right now there's a bunch of island nations that will probably not exist in 30 years. Many coastal cities are getting worse floods every year, having to invest billions in measures to protect themselves.

Every drought means conflict, they mean war, refugees and instability. Sure, the first world will be shielded from the worst for some time, but this isn't a Hollywood movie, the pressure will keep increasing every year exposing every flaw in the system.

Corona has shown that our world does not deal well with pressure and you can't make a vaccine for food insecurity.