I know people that would rather pay the fine than go through the crap that is filing through the site. We can't force people to buy anything. Why should it be required if people don't want it?
The individual mandate does not "require" people to buy health insurance. It penalizes people who don't purchase health insurance, which is entirely fair. The uninsured create externalities for taxpayers and health care providers. There is an ethical argument for penalizing people who refuse to buy health insurance when they have access to substantial subsidies and a functional market that offers health insurance that is very cheap.