Not everyone would benefit from Single Payer, in fact, nobody would benefit from Single Payer. It turns the Healthcare industry into a monopoly, and the government is always proven to be less efficient with money usage. For example, our current debt. Taxes would go up, our debt would go up, and our coverage would go down, because unlike with businesses, our only choice is the government, and even if other options were allowed, everyone would always be paying for it.
Actually, infrastructure is not Socialist. I think we've had that discussion before. For a system to be Socialist, the means of production must be Socially controlled, and infrastructure is not a means of production.
I'm not referring to food stamps, I'm talking in general. Food Stamps would be an example, but that's only one form of Federal Aid that steals from people to give to those who the Government views as more deserving, or in greater need. Sure, a person should willingly help someone in need, but but if the government is using their tax money to help someone else, that's not willing. That's why I worded it as "Entitled". When is one person entitled to another person's money?