After doing some more indepth reaserch to some of the things brought up.
Thank you Leo and thir btw, its allways nice to examin a topic like this from many perspectives.
One must also consider that in "old china" the concubines and other ladies of the court who lived within the Red City didnt have any other recourse for safe lovers other than each other or the court eunuchs, who couldnt ejaculate and thus get them pregenant (if they could achieve an erection at all,) (any non eunuch other than the emperor himself was forbidden to remain within the confines of the sacred city after dark.) Not to mention that castration in ancient times also often involved a penectomy (the total removal of all the male genitalia).
Tom Burnham's Dictionary of Misinformation failed to verify that being the case or not so much as alluded too a eunuch having sex btw, since euenechs where often greatly rewarded, he "assumed" it meant for sexual favors which was hardely the case so much as internal political nessesities. Not that some euneuchs couldnt manage oral sex just fine if it suited them.
Additionally a subject of a normal castration (removal of only the balls) who is altered before the onset of puberty will retain a high voice, non-muscular build, and small genitals. They may well be taller than average, as the production of sex hormones in puberty—particularly testosterone—stops long bone growth. The person may not develop pubic hair and will have a small sex drive or none at all.
Castrations after the onset of puberty will typically reduce the sex drive considerably or eliminate it altogether. The voice does not change. Some castrates report mood changes, such as depression or a more serene outlook on life. Body strength and muscle mass can decrease somewhat. Body hair sometimes may decrease. Castration prevents male pattern baldness if it is done before hair is lost; however, castration will not restore hair growth after hair has already been lost due to male pattern baldness. Castration also eliminates the risk of testicular cancer. And with homrmone replacment therapy can provide a modern male with some sembelance of functionability.
As for anyone "fucking for hours" in ancient china they were probably practicing a Taoist meditation and or making use of a cock ring (which btw the first documented rings were made in China from the eyelids of goats with eyelashes intact. The flexible eyelids were tied around men's erections, and the hardened lashes were said to increase the pleasure of intercourse and it's duration) or using a forigen object or hand or toungue.
As for Goreans in the fictional setting of the books or otherwise looking upon castration in general or eunechs as un-natural or demeaning practice to commit on a man or as making one less dominait in their eyes, etc, thats hardely a fictional cultural phenomena unique to Gor, nor is it one thats any kind of main focus within it.
As for links between testosterone (which has allready been proven to be linked but not be the only factor involved) production and dominance in general, the more medical reaserch we do, the more we find out that the old biological maxium of "structure equaling function" has been pointing us all along to "nature over nurture" in many phycological behavioral models as well as the purely physical characteristics of anatomy and phisiology.
All of which may seem to have nothing to do with the topic at first glance; but upon closer examination explores the reasons behind such questions as why we as human beings behave as we do in certian circumstances.