If in favor of the PPACA, you might bring up the following points:
The PPACA is a way for the government to promote the general well-being of its citizens.
The provisions of the PPACA are a natural extension of the Medicare and Medicaid programs.
Having large numbers of uninsured Americans increases the cost of care for all citizens. When people are unable to pay their bills, those costs are cycled back into the system, increasing rates for everyone.
If against the PPACA, you might bring up the following points:
The PPACA is inconsistent with the American values of personal responsibility.
Providing for health care is a power that should be reserved to the states.
Health insurance companies have precise ways of making sure the system will remain financially stable. By refusing insurance to some people, they keep costs down.