Socialized medicine doesn't somehow equate to free and unlimited health care. We could spend 100% of GDP on health care and people would still eventually get to a point where there's nothing that can be done.
The most obvious are that taxpayers shouldn't be forced to subsidize the consequences if your unhealthy lifestyle.
People need to be more realistic about medical outcomes and doctors need to be more straight-forward with patents. According to many articles, a LOT of health care spending in on (usually) elderly people during their last year of life. From the articles mentioned below: (Google: end of life care costs:
Medicare, the health insurance program for the elderly, spends nearly 30 percent of its budget on beneficiaries in their final year of life. Slightly more than half of Medicare dollars are spent on patients who die within two months.
But the costs of patients in critical care with chronic disease and multi-organ failure — heavily the elderly and those for whom death is a common but not an immediate outcome — are exceedingly high. The top 5 percent of such patients account for nearly half of spending (more than $600 billion a year), ... Those patients are typically the ones whose doctors do not level with them or their families that their chances are not good, and who are put in hospice programs much later than they should be.
My wife Susan died, literally in my arms, on Jan 13, 2006 of brain tumor, just seven weeks after diagnosis. She had a Glioblastoma Multiforme (GBM), for which (basically) no one lives past two years and even that is with constantly declining quality of life, and it was right next to her brain stem. As a result, she declined surgery as it wouldn't have extended her life by much and would have left her severely impaired - she didn't want to live or be remembered like that.