A. No place in Israel is truely safe.
During the second Lebanon war, the most safe place was around where I live (maximal distance from both Gaza and Lebanon). I live 5 Kilometers from the green line. If the Palestinians around my area decide to join in, my house will be in more danger than Dotan's.
B. Not living in Israel is not really an option.
Obviously, for some, it is. Long term, however, history showed that Jews don't fare well when not under self government. Thankfully, antisemitism suffered a major blow back after the Nazies lost WWII, and so people who grew up in western countries don't think of it as something real. It is illegitimate, and still fairly rare. That is a good thing. Sadly, it is also very far from non-existing. Jews in many western European countries don't wear external religious signs, and if they do, experience daily harassement. What's more, the current trends are not promising.
Maintaining Israel is a survival need. The fact that Israel's current strength pushes the danger back quite a bit is proof that the need is real, not vice versa.