Neutering is a personal choice - one that a responsible dog owner will take very seriously. It is prudent to discuss the pros and cons of spay/neuter with your dog's health care professional as well as do some research on your own. Unless a dog/bitch is going to be used for breeding purposes, I vote for neuter. And the breeding topic opens a whole new can of worms.
Most men have this thing about "balls" and I don't mean the football, baseball, basketball, volleyball, etc kind of ball
. Vasectomy on our Irish Setter wasn't a good idea, and personally I wouldn't recommend it. Too much testosterone in a house can be a headache
. My personal experience with vasectomy from 30 years ago -- I carefully selected a "husband" for my Irish Setter, Mandy and she blessed me with 9 pups. The man who was to become my husband got pick of the litter and of course, being very "manly" he chose the largest pup and named him Joshua. Well Josh stayed with me most of the time and he was very devoted to me. Like his mother, Mandy, Josh was very well trained. Both Mandy and Josh would heal in tandem off leash and never miss a step no matter how hard I tried to fool them. The thing with Josh is that he just kept on growing and topped off at 100 lbs. By this time Mandy had been spayed and we knew that Josh needed to be neutered - BUT Ron had this issue with Josh losing his balls. So off to the vet we went and requested a vasectomy. Thirty years ago, in the small town we live in I'm sure that this was a shocking request. Doc knew me well and complied so Josh came home intact but without "baby juice". As Josh matured he became overly protective and grew aggressive. Although I could still safely walk him off lead under a heal command he would growl at anyone that came near me. People would cross the street when they saw Josh.
I understand the "power rush" of having a huge bully dog walking by your side, but for me it wasn't a good thing.
Sadly, we had to make the decision to place both Josh and Mandy when our first child started walking. Josh was a danger to his safety and I wasn't willing to take a chance on our little one getting hurt. Remember this was 30 years ago BEFORE dog behavioral sciences were practiced. The story had a happy ending as both Josh and Mandy were adopted together and got a wonderful home.