We do, but there are better ways to recoup those costs from the point of view of the healthcare system we're talking about.
As it is, the plan hits people who want to opt out with a tax penalty of thousands of dollars, on top of the taxes they'll be paying like everyone else to support the system. That's not much of an opt out, and I don't think that falls in with an American concept of liberty defined as freedom from government.
What would work quite well without causing collateral is invoking that tax penalty on people who opt out, but if they have no unpaid medical bills at the end of the year, the government refunds them the money like a security deposit. If you don't damage the system, you don't have to pay for it. If you did damage the system, they'll keep your money to repair the hole. That allows for independence, and the conservative side of me can get behind that.
That could be arranged through the tax structure just as easily as the current plan, and the only reason why it isn't there already is because not allowing any exceptions will bring in more tax revenue. I'm not okay with that. We can talk healthcare reform, and I think we should, but let's get it right.