some one correct me if i am wrong but MMA has been around 10 15 years how is that not around long enough
15 years isn't a long time for a sport to be around. When you compare it to other mainstream sports in this country (US), it's still a baby.
MLB - estbalished 1876 (133 years)
NHL - established 1917 (92 years)
NFL - established 1920 (89 years)
NBA - established 1946 (63 years)
UFC - established 1993 (16 years)
To be fair, MMA wasn't popular right away either. It wasn't until the late 90's that people even started to pay attention to it and take serious interest in MMA as a sport. So, it's only been popular in the mainstream for 10 or so years now, which isn't a long enough period of time to establish a solid idea as to how dangerous the sport truly is.