While that feels good for you, this does not constitute the evidence that "going barefoot is good for you." A sibling posted some studies that would be more interesting (I'll admit I've not read them).
What "good for you" would look like to me would be longer life expectancy, better health outcomes at different stages of life, etc. "Strong feet," for example, doesn't meet that standard for me. I'd want to see a link that work to actively strengthen one's feet creates those better life outcomes.