This war was never about WMDs in the first place. I was shocked to see so many intelligent people on this site get taken in by a propaganda campaign that was nothing more than a thinly-veiled means of generating support for the war among the same dopey soccer moms who had been Clinton supporters throughout the 1990s.
The funny thing is I am by nature cynical. I normally would not have bought the Iraq war rationale. But I decided to trust. I figured for once let me not be a contrarian. For once, let me dare to believe in the cause and see what happens. Hence that betrayal feeling you mentioned. Like the old line from the Dylan song:
"I offered up my innocence, and got repaid with scorn."
Or so it seems. What the hell is going on? Was all that intel wrong? Was regime change bad policy? I have no clue what is happening.