One of the reasons or excuses depending on what you heard first, is that American parents are cautious of encouraging their children to play rugby for reasons must ruggers might already know. It is a rough game and yet the absence of youth rugby in discussion of sport related injuries seems to becoming a growing issue. Even the NFL has got it’s PR working on this. See this article written by Wired’s Playbook.
Imagine if rugby had a greater influence. Do you think parents would think differently… is it any less dangerous than let’s say hockey or football?