I have to agree with you. Everyone from old man Bush, Colin Powell, to Brent Scowcroft warned Dubya, but he wouldn't listen to them. In 1990-91, we had the manpower to do the job, but the always cautious Colin Powell knew occupying an Arab country might lead to disaster.
Yet compare the treatment of Powell and Rumsfeld on this very site.
Apparently, being on the right side is more important than being right.