I don't want anyone to be stolen from to fund war.
War should be voluntarily funded. All government should be. I am taxed. That's reality. My government has a duty to defend my life, property, and interests (which includes not allowing more enemies to develop nukes). The same is true for Americans abroad.
I don't want my country at war. I don't want my enlisted brother (or any others) sent to war.
I'd rather violent religious zealots not try to build nukes.
Of course we have bullshit wars. Of course we have evil in our own government. I'm sick of it too.
But the cost of doing nothing (no matter what) so a bunch of mystical hippies can live in a fantasy world is extremely high at times. Iran with nukes is one of those times.