I don't like the idea of picking sides in somebody else's fault.
So, what you're saying is, despite the fact that Israel made a lot of concessions (including territory) and pulled their troops immediately out of the conflict zone the last time they had the major conflict with (right now I can't remember the name of the country, Lebanon I think), now that they're being threatened by people who would indiscriminately wipe out their population, we shouldn't "pick sides"?
Correct me if I'm wrong, but didn't Israel strike the first blow? I heard from somewhere that Israel captured Lebanese (or whatever) soldiers, to Lebanon did the same thing back, and of course (like flamewars), it escaladed. Whether or not that's true (I have no source), the rest of what I say still applies.
And also, didn't Israel originally take the land from others? I don't think the current Israelies have been there forever. And that goes exactly opposite to what you said.
They've been fighting amongst themselves as long as I can remember. There's been constant suicide bombings and tons of tension. There was bound to be a war there eventually, it was only a matter of time. They really have to fight, somebody has to win, and some government has to control the important part of the region. As bad as it is, having all these little territories with their own religion and hating everybody else is causing too many problems. Unless the US is going to occupy every country over there, somebody has to step in and stop the internal fighting.