False theories inspire fear
As we do this, a lot of long-cherished false theories will likely fall by the wayside, such as orbiting stars, the internally heated sun, global warming, and so on, and of course also the more devastating false theories, such as the theorized need for war, the inevitability of nuclear war and economic collapse and resource depletion, and also the false theory that demands depopulation, and so on. False theories inspire fear. "Fear is the mind killer," said Frank Herbert in Dune. Science and truth open the prison doors of all of the false theories that have chained us, if we strife for the truth to be free.