Centenarians are still living near their children and feel loved and the expectation to love. Instead of being mere recipients of care, they are contributors to the lives of their families. They grow gardens to contribute vegetables, they continue to cook and clean.
We often think about happiness as trying to increase our joy, but it's also about decreasing our worry. So what you get for paying those high taxes is, if you're a parent thinking about putting your child through school, you don't have to worry about it, because all education through college is free.