Do you think the creation of Israel was a beneficial thing? It's probably not what you mean, but destroying the infrastructure that's already in place would be a shame for the whole world (especially everything medicine-related). Many people I talk to say they should have created Israel somewhere "empty" to avoid all these conflicts, but as far as I know, it has not worked too well with Birobidzhan. Nobody wants to move to the middle of nowhere.
I think we'd still be fighting WWII if Israel didn't exist. Europe treats Jews like shit. England created Israel because they treated Jews the least like shit, and their benevolence was "get the fuck out of the country." At the time of the Treaty of Balfour, Israel was effectively empty, from a European standpoint - at least as empty as Guyana or Uganda. Unlike those other two, European settlers weren't trying for permanency in Palestine, they were protecting the road to India. The first bits of what became Tel Aviv were purchased from Turkey during the 2nd Aliyah - in the name of a middleman because Jews weren't allowed to own property. Israel was every bit the "get the fuck out of my country" exile that Australia was, the difference being the Zionists were more keen to comply because they were sick of being hunted to extinction. Meanwhile, the turf upon which Israel was established was just another Ottoman hinterland. The only thing that set Israel apart from any other British colony is it was granted autonomy; when Britain crumbled after WWII the Israelis had nowhere else to go. So they fought.