Why are so many people against Obama's health reform!

As far as I know he is offering something similar to France’s health system. France has the number 1 health system in the world. So why can’t we use them as a model for our health system. The US falls in number 37 right now! Even Costa Rica has a better health system then we do.

I don’t see why some Americans are so closed minded to something new. If the system we have right now is not working, its only obvious that we need to make a change.