Hmm, Tony, that's surely debated on a dayly basis at home, all over the world.

Is it the oil? Unlikely..but then, why are there threats of preventing any oil deals to countries that might oppose war?
(Well, again, it's not that important as the dealers who do get the bargain will sell their oil everywhere there's a market.

Is it the WMD? But then, why are there discussions with North Korea which does have far more dangerous WMD's than Iraq?

Is it Saddam in person? Well, he's probably liked by only 20% of his population (or only 4,400,000 persons as opposed to 6 Billion earthlings).
Ok, he must go.
But doing so by sending bombers, tanks, heavily armed troops....Thousand of Iraqis will die (a huge number being children) while Saddam will have ample time to get lost and disappear, like OBL did.
But even then, because there'd be a new Iraqi government, who will care where Saddam is?
And the new Iraqi government...It must first be accepted by the Iraqis.
Otherwise we'd only replace a dictator by another dictator and in 10 years time, who knows what he might think of the west?
After all, he might very well form a religious oriented country and befriend Iran.
Not what Donald wanted back in 1984.
Wars have short term effects...but long term ones too.

Raoul