Well, I don't really expect climate change to eat up me or mine. I live too high to be flooded, to far to the north to be fried, in a country with a low populat

Well, I don't really expect climate change to eat up me or mine. I live too high to be flooded, to far to the north to be fried, in a country with a low population density, on a farm with 21 hectares of land (7 hectare of which is under tillage, the rest forest). The climate may change, driven by whatever process - be it anthropogenic, natural fluctuation, diminished solar output or (most likely) a combination of these and other factors - but I do not see this lead to the disaster scenario you just sketched. The potential loss of antibiotics (which is wholly unrelated to the disaster scenario this discussion started with) would be annoying but not directly life-threatening. The chance of crops failing here due to drought is very small as nearly all scenarios with regard to climate change show the amount of precipitation in my area (currently around 900 mm/year) to increase instead of decrease.