I blame the parents, lol.
I was walking back from the shops the other day and a little toddler was walking with her mum, holding her hand. The child tripped but did not hit the ground, no hurt knees, no nothing, just a little shocked. The mother got down and started pampering the child with 'oh, are you ok sweetheart, blah, blah, blah' then the child started to cry, not 'cos she hurt herself because of the mothers reaction, what ever happened to 'oops a daisy'!!!
Children need to be children, scraped knees, sprained whatevers, its part of childhood and it teaches them.