Further to (2) by affording preventative care to everyone, people in the early stages of serious diseases can obtain preventative care and coverage thereby eliminating expensive treatments later on. In the US if you walk into a hospital near death they're required to look after you -- not so much if you walk in seeking preventative care. Imagine if they spent the $5 early on to treat you instead of the tens of thousands when you're near death? It's yet another reason why universal healthcare is a good, cheaper thing to have.