This shit drives me crazy. One example I've witnessed - family playing in the park, the three (or so) year old starts running and laughing. Parents say, "Now, don't run! You might fall." On grass. I weep for that child.
Another example - parents not letting their10 year oldkid go all the way up the sledding hill, but making him start half way down so he won't hurt himself on the "nasty hard snow." Meanwhile, my five year old is going from the top, wiping out at the bottom, laughing his head off the whole time, having a riot.
There is a line to walk between unsafe and good fun, but if you're over protecting your child, you're doing far more damage, in my opinion, than if you're letting your child take some risks, and get the occasional bump, bruise, or even stitches. My kids climb the trees in our yard, I would bet money that one day one of them is going to fall and break an arm or something. It's a very real possibility. They're still going to be out there, climbing.
ugh. If only there was one "correct" way to raise kids.