Running in those blue "toe shoes" must be interesting. Did your feet hurt? I use running shoes and they cushion and protect my feet more. As I'm older I think that is best.
However, walking barefoot on a lawn/grass is bliss. It really feels good. Even if my neighbors and friends shake their heads in dismay and think I am weird, I find it very grounding and healthy. And by walking barefoot, I don't have to buy anything!
The Nike lie.
It is really healthy to walk barefoot but if yo are interested, a decent (and interesting) book on the running barefoot is called 'born to run'. Well worth it.
I'll look at the book. But no promises.