It’s a bad movie that you might have seen before. It tends to show up whenever an advocate of voluntary cooperation explains how society could operate without state coercion. Right on cue, the zombies from “Night of the Living Statists” rear their heads and mindlessly intone, “But if there’s no government, who will build the roads?!”
The zombies can’t hear your response, so it’s useless to try to give them facts and explain how things could be done in a way that’s better for everyone if roads and other such things were provided as private services rather than as coercive government monopolies. For those who are open to the facts, though, is there any evidence that people can actually cooperate voluntarily for their own interests?
As a matter of fact, there’s quite a bit of evidence of that.

What if we planted for future instead of spending for today?
Shared misery: Nobody can have air conditioning unless everyone can
I haven’t learned to stop walking on eggshells around angry people
Spooky stories: My friends share their real-life weird experiences
Do you know your heart’s desire? Or are you just chasing a mirage?
Want to return to a simpler world? Say ‘goodbye’ to cheeseburgers
In cold and dehumanized culture, many yearn to feel human again
Irony abounds when reader proves my point by trying to refute it
How should we react when man admits molesting own daughter?