Within my lifetime, a magic genie will appear that grants all our wishes and solves all our problems.

For example, many Christians hold this belief under the names the Kingdom, the Rapture, and/or the second coming (details depend on sect). It leads to excessive discounting of the future, and consequent poor choices. In Collapse Jared Diamond writes about how apocalyptic Christians who control a mining company cause environmental problems in the United States.

Belief in a magic problem solving genie also causes people to fail to take effective action to improve their lives and help others, because they can just wait for the genie to do it for them.