People die . Perverse spirits, demons need a body to fulfil lustful desires and when given a place to have legal ground to possess a person such demons can infest a person to such an extent that they become zombie like under demonic influence.
When a person is under demonic possession they are driven to indulge in sexual perversion that debases the reproductive act of procreation just to satisfy demonic lusts that will condemn them to hellfire like the wicked population of Sodom and Gomorrah.
They couldnot stop the judgement fire of God. God destroyed those filthy dreamers witj fire and brimstone. Archeologists have found radioactive particles in the burnt ashes of the remains of Sodom and Gomorrah.
What will destroy the world in the end times ?
Fire.The heavens will be dissolved with fervent heat.