Why do you think we must go to expensive doctors for healthcare? They haven't even existed for most of humanity. The problem is that government regulations *prevent* people from offering healthcare at reasonable prices. They don't allow nurses to operate without the supervision of doctors, they are trying to push herbalists out, and if you were to make a splint for your neighbor's broken arm... God help you.
The problem isn't that we lack healthcare, it's that the government has mandated that all health care be done by expensive doctors, rather than by each other.
On top of that, we have developed a societal expectation that we should have everything just because we want it. Why should you be guaranteed dental care by a specialist after drinking cokes for decades?
There are many people who would and could help, but we demand that our help comes only from experts and specialists, and then we demand that someone else pay for it.