We have a powerful spiritual enemy who hates God and wants to destroy the human race. Jesus, Himself, alludes to the devil and his evil works numerous times. Scripture teaches us we cannot defeat the devil with physical weapons. We need spiritual weapons.
Friend, we don’t know many of the details about what Heaven will be like. But that’s no reason to assume that our time on earth will be superior to spending eternity with Jesus in Heaven. Unless Jesus comes back while you’re still living, you will experience death. But, for Christians, there’s nothing but good news.