"A eunuch is a castrated man, in particular one castrated early enough to have major hormonal consequences; the term usually refers to those castrated in order to perform a specific social function, as was common in many societies of the past. The earliest records for intentional castration to produce eunuchs are from the Sumerian city of Lagash in the twenty first century BC. Over the millennia since, they have performed a wide variety of functions in many different cultures such as: courtiersor equivalent domestics, treble singers, religious specialists, government officials, military commanders, and guardians of women or harem servants. In some translations of ancient texts, individuals identified as eunuchs sometimes historically included men who were impotent with women, as well as those who were celibate.The English word eunuch is from the Greek eune ("bed") and ekhein ("to keep"), effectively "bed keeper".Servants or slaves were usually castrated in order to make them safer servants of a royal court where physical access to the ruler could wield great influence. Seemingly lowly domestic functions such as making the ruler's bed, bathing him, cutting his hair, carrying him in his litter or even relaying messages could in theory give a eunuch "the ruler's ear" and impart de facto power on the formally humble but trusted servant. Similar instances are reflected in the humble origins and etymology of many high offices (e.g.,chancellor began as a servant guarding the entrance to an official's study). Eunuchs supposedly did not generally have loyalties to the military, the aristocracy, or to a family of their own (having neither offspring nor in-laws, at the very least), and were thus seen as more trustworthy and less interested in establishing a private 'dynasty'. Because their condition usually lowered their social status, they could also be easily replaced or killed without repercussion. In cultures that had both harems and eunuchs, eunuchs were sometimes used as harem servants (compare the female odalisque) or seraglio guards."[Source: http://en.wikipedia.org/wiki/Eunuch]
"Castrated human male. In the Middle East the eunuch was castrated for practical reasons, and served in positions where only castrated men were allowed.The eunuchs were either guards and servants inharems or chamberlains to kings. These were the original positions for the eunuchs, but many succeeded in climbing in social status, and could reach positions like bodyguards, confidential advisers, ministers, even generals and admirals. Many of the advisers under the Ottoman Empire were eunuchs.The reasons to castrate men entering such positions, are rather obvious: For the eunuchs working in the harems, there was a need for men who could not make the women pregnant. Another reason was that many thought that the eunuch's personality was more favourable for important positions. And also the fact that eunuchs never could have any children made them less threatening for rulers and important people: the eunuchs had no sons who could challenge their own sons' future positions.There were 3 levels of castration:1) Removal of both testicles and penis, leaving the man with only a hole for urination.2) Removal of only testicles before the boy reached puberty, leaving the mature male totally non-sexual.3) Removal of testicles after puberty, leaving the man with capacity to achieve an erection without ejaculation.Men or boys who were castrated could either accept castration voluntarily, in order to enter certain attractive positions, or they were men being punished for certain errors or crimes. Additionally, they might be boys sold by their parents, and hence slaves, and therefore under the total will of the owner.In ancient Egypt, a court officer was called eunuch whether or not he had castration. Most were castrated, hence the use of the term."[Source: http://lexicorient.com/e.o/eunuch.htm]
The grave desperation of the ancient leaders to secure themselves of selfish assurance has led the unsuspecting gullibles to the deprivation of cathartic privileges. Sad but true, except for the men who volunteered their manhood for castration.