I haven't read all of this thread, and while you all make good opinions, I think it's pretty much a moot point as it is right now.
We funnel cash into the medical field through our taxes and social security and all that jazz. These funds go into building hospitals and stuff already. Most of our problem tends to come from funneling our money into HMOs and pharmaceutical companies. Their goals aren't to provide healthcare--it's to make a profit. Ideally, having universal healthcare would cut out the middle man and the healthcare industry would be non-profitable. The government would control drug companies and would stop screwing people because they literally didn't dot all their I's and J's or cross their T's and X's on their health insurance forms. We'd stop paying CEOs of these companies millions of dollars in bonuses for no reason and people would get the healthcare they deserve.
I also don't see why there can't be some free-market clinics so that rich people or whatever can get the healthcare they want and to stop opponents from bitching about how they'll have to wait months before seeing a doctor.