From: Ontario, Canada
I tend to agree with previous poster here about most of the enuchs having better lifestyles hence longer lives in general.
Well looked into some stuff about the castrati singers of old:
Although castration did little to damage a castrato's intellect, it did pose serious health and emotional problems. Most castrati suffered from the effects of developmental hypogonadism, including infantile penis and an underdeveloped prostate. They also had more developed subcutaneous fat than the normal male, fat deposits localized on the hips, buttocks and breast areas, fatty deposits on the eyelids, and skin that sometimes appeared wrinkled or swollen. The arms and legs of many castrati were unusually long as compared to the torso (the long bones never stopped growing), which made them look distorted.
Castrati tended to be fat, volatile, conceited, and almost impossible to get along with. Composer George Frederick Handel's notorious shouting matches with his castrato Senesino, for instance, were well-known throughout England.
Velluti, the last operatic castrato, died of old age in 1861 -- a relic of a past that could not be resurrected.
credit and full article here: http://www.essortment.com/castrati-history-21040.html
It is much harder to think about doing something than actually doing it!