Romneycare was supported by an overwhelming majority of the citizens of said State and voted into law by 98% of the State's legislature and 100% of the State Senate.
The popularity of the law in the State remains unchanged.
I don't agree with socialized medicine but I support federalism, and where Obamacare is a study in government overreach and abuse of power, Romneycare, like it or not, was a study in Federalism.
The fact that one supports the most basic tenet of federalism and the right for the people and government of a State to choose something that doesn't fall into step with the general principles of conservatism, IS conservatism.
For Romney to have opposed Romneycare, in the face of that level of support, and done anything to stop the legislation from being voted into law (not that he could have), would have made him the mirror image of Obama. A ideologue of a despot elevating his ideological agenda above the clearly-stated wishes of those he was elected to serve.
I agree with respect to federalism and Romneycare vs. Obamacare. The states have much greater leeway to make stupid asinine mistakes, leeway the Constitution denies to the federal government.