Hell, I remember my parents driving us to the beach on a winding California road---we'd slide around on the backseat like it was a roller coaster and squeal with delight. When we got to the busier roads, Mom made us put seat belts on.
We had metal slides, we walked to school, we skinned our knees on the pavement and we fell off our bicycles and SURVIVED!
Now, everything is padded, gated off, off limits. I don't think it really helps kids any. You need to hurt yourself a little bit so you develop the common sense not to eventually do something moronic and hurt yourself A LOT.