From what I've seen you have it backwards. Athletes are becoming more specialized, like the anorexic-looking marathoner and the super big but incredibly slow powerlifter.
If you go back to the 1950s, yeah you see some guys who focus mostly on being big and others on running, but alot of them were better all around athletes. Think crossfit versus marathons or weightlifting.
In all of the universe there is only one person with your exact charateristics. Just like there is only one person with everybody else's characteristics. Effectively, your uniqueness makes you pretty average.