Your first-hand experience isn't universally applicable. Many people live in food deserts or don't have access to reliable cooking facilities. And physical exercise costs time, which for many is lost to long commutes.
As you indicate, though, healthy food isn't intrinsically expensive. That means it shouldn't be an intractable problem.
As you indicate, though, healthy food isn't intrinsically expensive. That means it shouldn't be an intractable problem.