Emotionally, I understand why a family would put a vegetated loved one on life support, but it makes no sense from a financial perspective. It's not like the patient's brain would eventually regain its former functionality. If the family wants to keep the not dead, but not alive loved one, well, not dead, but not alive, then that is their decision, unless the loved one stated, before losing functionality of course, that they don't want to be on life support.