you simply cannot compare retirement ages across sports. all sports utilize different parts of the body in different ways. what is more taxing on the body, or, what parts of your body can take more stress?
is your sport mostly just running, or running + jumping, or running + jumping + twisting, or running + jumping + twisting + 10,000 strokes per day on your arm, shoulder & joints...? it only takes one aspect of your sports requirement to noticeably deteriorate for an athlete to consider retirement. i.e. legs, cardio, speed and reflexes are still fine but shoulder & arm joints aren't? you will not succeed at the top levels of any racket sport, baseball (especially pitching), basketball, swimming, fencing, golf, or any other sport where arm function is a major necessity.