True, true. But that's not what most Israelies want. If an angel from heaven declared that the Palestinian state would in fact be peaceful, about 95% of Israelies would support it. The problem is, both PLO and Hamas agree a Palestinian state is, at most, part of the "staged plan" for Israel's annihilation, which is a good reason for Israelies to oppose it.
Even if it would, not to put too fine a point about it -- so what? Israel is a democracy, not a dictatorship. If one assassinates the PM that signs some sort of deal it hardly means the deal no longer counts, much like the assassination of Rabin didn't cancel the Oslo accords (morally speaking, if not necessarily practically speaking, they were cancelled by Arafat's terror war, and his open declaration that the Oslo accords were merely a ruse to get a base to kill Jews, but I digress).
Not exactly. Assassination, again, doesn't set the agenda in Israel. In fact it didn't. It does, however, set the agenda in the PA: if there is a Palestinian state and Abbas (assuming, contrary to all evidence, that he actually wants peace, despite his constant reiteration of the "right of return" and refusal to recognize Israel as the Jewish state and his unity deal with Hamas, etc., etc., etc.) is assassinated and replaced by Hamas, the peace agreement with Israel is cancelled in that millisecond.
Since Hamas takeover is more or less a given that this is what will happen if the PA becomes a state, as it did in Gaza, that means there is no such thing as a peaceful Palestinian state -- only a Hamastan that would spread to the WB as well as Gaza.
There is simply no comparison between what extremists can do on one side and what they can do on the other.