Many of us have been exposed to graphic pictures/discriptions of Armageddon and the destruction of society since we were babies! It would only be natural to feel fear at times. Its good to let rational thinking win over though. Is it reasonable that a God of love would slaughter billions of men, women, children and babies? Simply for not converting to the WT organisation? No its not. In such circumstance God, Jesus and his sword bearing angels would make these terrorists of IS look like saints!
I recommend reading the Armageddon section on JWfacts to unravel yourself from this evil teaching. As long as you feel fear every time a bad thing happens in the world watchtower is happy.