JDubs can not wrap their brain around what it will be like when everything is shut down with no power, running water, or refrigeration for food. Just clearing the land of decaying bodies and rubble will take hundreds of years.
Most JDubs will say that they don't worry about it because he will just wave his magic wand paradise will be here.
We went to an outside wedding two weeks ago and my wife complained about the heat and humidity. I told just wait until after Armageddon when you won't have power or air conditioning or even a running fan. She looked a little worried.