More than anything else, economics is a way of thinking. Knowing just a little bit of economics can save us from the tricks of political hustlers. Our first rule is there's a cost to everything. To obtain more of one thing requires the sacrifice of something else.
Nothing is free.
Consumers of these services might enjoy them at a zero price, but that doesn't mean they're free. If expenditures weren't made for public libraries, schools and medical services, those resources would be available for something else. The main issue about so-called free services is which Americans are going to be forced to pay for them. The moral or Christian principle says the person who enjoys them should pay. But if we accept the standards of thieves, we don't care who pays as long as we enjoy it.