I also base my beliefs on the fact that health insurance costs are out of control;
I also believe change was needed because despite the absurd costs our health care system was ranked 37th in the world in the last survey by the WHO, somewhere near Morocco, Cyprus, and Costa Rica. We can argue about how the countries were ranked but one thing is certain; our system is simply not good enough. Also, in the current system people who refuse to get health care are already a drain on tax payers.
Add all of the above up and any logical conclusion must include the idea that change was necessary.