The first error is assuming that survival is a shared goal. Trump’s followers fall into three groups:
1) The billionaires and wannabes who have already built their mountain top fortresses in New Zealand and for whom a significant and quick reduction in the earth’s population is very, very desirable. The billionaires are the most rational group,
2) White supremacists who believe that life with anything other than aging, fat, white, willfully ignorant people is not worth living, and
3) 20th-century religious idiots who know that Trump was sent by God (a tall, blond, middle easterner) to destroy everything so that they can spend eternity with aging, fat, white, willfully ignorant people, and divine tall, blond, middle easterners.
Unfortunately, neither human survival nor logic is a significant factor for these people. Reality is fake news.