The purpose of evil is to see what NOT to choose!
Rest assured, friends, those who let the dark ones take control will let the Light ones to refuse control and, if need be, evacuate themselves to a better world should this one fall into darkness.
ONLY those who have Love in their Hearts can pass this transformation, as the Bible teaches us of this possibility. No darkness can survive in Heaven, therefore your heart must be pure if you wish to be saved. If not, you can always live your life without God, without Love, without positivity and good, and reap all its rewards and benefits in the old 3D Earth that may well become Hell itself (by own choices of people!).