I never liked Obama. I voted McCain, but if Clinton had won the Democratic nomination, I would have voted for her.
My single biggest reason was because of his healthcare reform plan. An income-tax penalty for not having health insurance? Come-on. A single-payer system I could get behind, but not Obama-care.
Then there is the issue that he has backed down on pretty much every single campaign promise. No climate act. Sending MORE troops into Iraq/Afganistan. PATRIOT Act. The list goes on.
Oh, and BTW, I railed against Bush's idiocy for 8 years as well, for the wars and his running up huge deficits.