Sometimes there's truth in old cliches. There can be no real peace without justice. And without resistance there will be no justice.
It's odd how those who dismiss the peace movement as utopian, don't hesitate to proffer the most absurdly dreamy reasons for going to war: to stamp out terrorism, install democracy, eliminate fascism, and most entertainingly, to "rid the world of evil-doers.
If you are religious, then remember that this bomb is Man's challenge to God. It's worded quite simply: We have the power to destroy everything that You have created. If you're not religious, then look at it this way. This world of ours is 460,000,000 years old. It could end in an afternoon.