However, I should have gone the extra mile and had the testes removed entirely, no point in leaving them (in) there. Nothing to get squished & cause pain, plus can't get cancer there if they're gone.
Plus a smaller nutsack that doesn't sink to your knees when you get to be EagerBeaver's age...
Of course you must be joking. You are talking about castration which means killing the sex drive altogether. The only possible benefit would be that you would not have to pay for anymore sex workers.
A vasectomy can even reduce libido in a small percentage of cases.
Furthermore the sperm that no longer gets ejaculated to the outside can cause internal complications (this will be a bit technical):
"After vasectomy, the testes remain in the scrotum where Leydig cells continue to produce testosterone and other male hormones that continue to be secreted into the blood stream.
Some studies find that sexual desire is unaffected in over 90% of vasectomized men, whereas other studies find higher rates of diminished sexual desire, for example nearly 20%. The sperm-filled fluid from the testes contributes about 10% to the volume of an ejaculation (in men who are not vasectomized) and does not significantly affect the appearance, taste, texture, or smell of the ejaculate.
When the vasectomy is complete, sperm cannot exit the body through the penis. Sperm are still produced by the testicles, but they are broken down and absorbed by the body. Much fluid content is absorbed by membranes in the epididymis, and much solid content is broken down by the responding macrophages and re-absorbed via the blood stream. Sperm is matured in the epididymis for about a month once it leaves the testicles. Approximately 50% of the sperm produced never make it to the orgasmic stage in a non-vasectomized man.
After vasectomy, the membranes increase in size to absorb and store more fluid; this triggering of the immune system causes more macrophages to be recruited to break down and re-absorb more of the solid content. Within one year after a vasectomy, sixty to seventy percent of vasectomized men develop antisperm antibodies. In some cases, vasitis nodosa, a benign proliferation of the ductular epithelium, can also result. The buildup of sperm increases pressure in the vas deferens and epididymis. To prevent damage to the testes, these structures eventually rupture in more than half the cases. The entry of the sperm into the scrotum causes sperm granulomas to be formed by the body to contain and absorb the sperm which the body treats as a foreign substance."
Taken from
http://www.news-medical.net/health/Vasectomy-Side-Effects.aspx