I don't really know anything bad about NZ.
I've often wondered if I had been castrated as a teenager maybe I would have spent less time in police lockup for stupid behavioural issues.
Castration, as well as the elimination of hormonally-driven behavior associated with a stallion, allows a male horse to be calmer and better-behaved, making the animal quieter, gentler and potentially more suitable as an everyday working animal.[1]
Decreased Aggression: One of the most important behavioral advantages of castration is that as adults, these dogs will tend to be less aggressive both toward other male dogs and also people. The androgen (male) hormones, of which testosterone is the most important, are responsible for the development of many behavioral patterns. When young puppies are sexually mounting their 7 and 8-week old litter mates this is because of androgen surges in their bodies. The same is true with aggressive behavior.[2]
Forced castration is something I don't think anyone should admit to supporting.
I wonder if there is scope for repeat violent offenders be offered the procedure in exchange for early release or more lenient sentencing. Can, meet worms.
I like to imagine that scenario ends up being a footgun when, in the future, we've bred violence out of the human race, the aliens invade and we're too passive to do anything about it.
1. https://en.wikipedia.org/wiki/Gelding
2. https://www.petcoach.co/article/benefits-of-neutering-castra...