This is the fear talking. An understandably emotional argument. The people in stretchers dying from all the more common causes of death than terrorism, like being accidentally shot, would like to disagree with you.
Terrorists kill very few people. People driving cars kill far more people.
9 people are killed in America every day related to distracted driving. In four days distracted and texting Americans kill more people than terrorists did in Belgium. Let's have an uproar about that.