The people of Massachusettes demanded state managed health care and Romney devised a plan. Like Oregon did. If the people of Massachusettes (or Oregon for that matter) don't like it, they can change it to make it work for them.
You can make the same empty argument to defend the national plan. Our national reps voted on it, just as the state reps in Massachusetts voted on theirs. We can change it to make it work for us, just as they can change theirs. So what?
None of that addresses what's really wrong with both plans, namely the assumption that government should be able to dictate to all of us how we spend our money, how we manage our health care, even who we choose to do business with. Obama doesn't get that. You don't get that. And Romney doesn't get that, which is why he'll never get my vote.