There is also psychological damage to your populace to take into account. In Israel’s case, the iron dome prevents enough civilian deaths that the public and wa

There is also psychological damage to your populace to take into account. In Israel’s case, the iron dome prevents enough civilian deaths that the public and war hawk politicians don’t clamor for a “real” war against Palestine. An actual war could quickly spiral out of control if third parties intervene, and the cost of that is far greater the attrition of using a missile defense that’s too good at its job.