I'm going to assume your comment about the War of 1812 is sarcastic.
It's true, we all wanted to go into Afghanistan and kill Bin Laden after 9/11. We were all for that, but going into Iraq was a completely separate decision and the fact is that these wars have lasted TOO long. We're just babysitting at this point, running up an already enormous tab on credit and to boot, our men and women are dying. I understand we can't just unseat a government and attack a terrorist organization, basically cause chaos in the process, and then pull out immediately, but at this point, it's clear our presence is no longer needed there. I mean for Christ's sake, WWII didn't even last as long as this Second Gulf War/War on Terror. As I said as well, Bush also made the entire GOP look like shit and paved the way for this joker we have in office now to take the presidency. McCain was actually a great choice for president in my opinion (although picking Sarah Palin as running mate was about as dumb a decision as anybody has ever made) but we all knew he really didn't stand a chance after Bush. I agree that there was no way we couldn't declare War on Terror after 9/11. No country would've stood by and done nothing after that attack, but it's just been too long. In general, I think we're all just tired of the government and I'm no exception.