I think those who are against this need to modify their argument. Since the SC ruled this is a tax and the primary role of taxes is to fund the Government, how will this new tax be funding the Government? The argument now turns, based solely on the SC ruling, an argument of the role of Government. If you believe that providing healthcare is not a proper role of Government, get the people in Government who think it is, out.
Keep in mind, it took a Constitutional Amendment to pass the income tax.