These are cheaper than weapons too. Jews used to be so much smarter, they used not to invest in weapons. The period of 1939-1945 comes to mind, and we all know how wonderfully it worked out for them. They should get rid of the weapons now. They have nothing to fear. Hundreds of millions Muslim neighbors openly proclaiming the desire to destroy Israel? They are only kidding. Just because they tried it multiple times in the past doesn't mean they will try again.
4 UN peacekeepers injured in Sinai and taken to hospital in south Israel (Haaretz)
from the article: MESS Report / Iron Dome passes tests, but how much will it cost Israel?