I saw this post over at National Review's The Corner, and it rang true with me, largely because I've had this argument dozens of times before.
The idea that we have a right to health care is quite dangerous. All rights we've enshrined heretofore were things that could only be taken away from you; life, liberty, etc. Health care, like any other good or service, is something that can only be given.
If we enshrine a right to something that must be given to us, it creates an ever-dreaded slippery slope. At what point do the rights stop? and who gets to decide?