I came across an great essay by John J. Miller of Hillsdale College about Football, it’s early violent years and the impact that Theodore Roosevelt had on the game we enjoy today.
The man on the farm and in the workshop here, as in other countries, is apt to get enough physical work; but we were tending steadily in America to produce . . . sedentary classes . . . and from this the athletic spirit has saved us. – Theodore Roosevelt
Here is a link to the article – http://imprimis.hillsdale.edu/file/archives/pdf/2013_08_Imprimis.pdf
An interesting question is what role does risk and the potential for injury play in making us a stronger people and does a life a guaranteed safety make us weaker.