During the 70's, 80's, and 90's (before Lupron was commonly used), I saw many men (patients) who had had their balls cut off in treating prostate cancer. They generally didn't like it.
Interestingly, hot flashes was often their presenting complaint.
I retired from the practice of Internal Medicine in 2006 so I admittedly am not up to date.
Perhaps I should have written "but chemical castration is now generally preferred."
When I went to get the results of my prostate biopsy in 2008, my urologist informed me of my Gleason score 9 results on all biopsies and gave me my first Lupron injection before I left the room.
We didn't spend a lot of time discussing the pros and cons of having my balls cut off instead.
Ironically, I retired in 2006 and was diagnosed with prostate cancer in 2008.
Such is life.