Beyond the obvious reprocussions of not doing anything, we have a right, by basic international law, to go after those involved.
As far as good vs. evil, do you deny that hijacking 4 planes, slitting the throats of some on borad and then crashing the planes into civilian buildings is an evil action? How about blowing up embassies? What about the slew of other horrific things he's done or planned to do? How can you say that this is not an evil person? If an American did any of these things to Iraq, I'd be horrified. I don't use the word 'evil' loosely, but I'd define someone as evil if they have a complete disregard for human life. I think he fits the bill.
I feel there's far too many countries that want to stick their head in the sand and hope that all the bad things are just going to go away. Look at WWII closely, The same thing happened there. "Oh.. you're going to stop with Czechoslovakia? OK then. Oh.. now you're going to stop with Yugoslavia? OK.. as long as you don't take any more."
And I'll leave you with this thought. Though your country will not support the U.S., feel comforted by the fact that the next time your country is in financial trouble, you're threatened by an agressor or there's anything else you ask for help with, the U.S. will be there.
ps - I'm sorry for the harsh tone, but I'm just so tired of complacincy, fearfull fence sitting and other countries who only pretend to be our friends.