"I honestly don't care if Iran gets nukes. Israel already has them, so it's not a threat to Israel. It would just create the same balance as in the Cold war. Iran has no other serious enemies within missile distance"
How is Iran getting nukes not a threat to Israel because Israel too has them? You're relying on the fact that nuclear weapons weren't used during the Cold War to mean no one will ever use nuclear weapons against another country with nuclear weapons? That's a very scary assumption. Are you aware that nuclear war was a very real threat at times during the Cold War? Do you think the USSR moved nuclear weapons to Cuba just to piss the US off?
I really cannot grasp the demonization of Israel that is so common. They go to astonishing lengths to do as little harm as possible while still protecting their very threatened state. How many times does Israel have to accept the two-state solution and Palestine reject it, choosing conflict over peace, before we sympathize with Israel for once? I don't see how hating and wishing the death to all Jews and acting on these wishes can be seen as positive. It's ignorant, militant and disgusting behavior. Clearly not all Palestinians hold these views, but the ones in power support terrorism and destruction. It's hard to be on that side.
Anyway, a holocaust survivor once said "“When someone says they are going to kill you, believe them.” When a nation, very clearly producing nuclear weapons (I think you should look into that more because it's painfully obvious), has been saying for decades that its goal is to wipe Israel off the face of the planet, said not only by the President, but the Ayatollah, as well, which has already committed disgusting acts against its own people, there is reason to be concerned. Do you really expect Israel to not be very worried?
And to say that we should just let Iran be and the Iranian people fix their situation if they want is silly. Is it so simple to overthrow a dictatorship? Even if a majority of people there truly want tyranny, does that mean the minority should just be subjected to it?
I think you are wildly oversimplifying the situation. Would you say fixedly that all preemptive strikes are wrong? Would it not have been right for us to stop Hitler before he could kill millions? The "wait until something catastrophic happens" plan does not seem to make much sense.