You are making multiple false assumptions in there. The first being that 2.000 pound bombs are somehow “defensive”. The next being that a 30.000 fighters Hamas would somehow genocide all of the settlers, despite their army having hundreds of thousands of members. Then it goes further with this idea, that they want to eradicate them, when all they want is to get their land back. The settlers always have the options to leave and go back to their home countries. Meanwhile Israel as a settler colonial project has to commit genocide to complete itself because as long as a Palestinian people exists, it will demand to get back to its rightful land. Finally you are wrong about the reasons why people in Palestine support violence. They do so, because it is the only thing protecting them from annihilation. For Israelis it is a mix between believing, they need to commit genocide as being the perpetrator protects them from being the victims, classic imperialist greed and a big portion of racism and fascism.
But in the end Israel will destroy itself from within as all fascist states do eventually. The question is how many more people the US helps them to murder in the meantime.