I hear you. This is a good point, and in a free country, it doesn't seem right to force people to do anything. However, in the plan that was passed, there are options for low-income persons, and there are also options for people who don't want to participate. I think it's fair, and it certainly will help the problem.
Another problem I see with Obamacare is that it doesn't address the true problem with the healthcare industry. We have a handful of insurance companies and drug companies that hold all of the cards and they have a captive customer base. Its just like big oil. A few powerful corporations run the entire market for that product. If they want to charge more, they do it and no one can stop them. The government needs to break up these huge companies and create some kind of competitive environment again, just like they did with the telephone giant AT&T back in the 80's.