$1:
...but cites a study indicating it's effective and notes it's voluntary and only performed after all implications have been explained.
If it's voluntary than what the hell is the problem??
Even if it wasn't I wouldn't personally give a shit, but who the hell are the people whining about it to tell someone they can't have it done to themselves.
Reminds me of a landmark case in Canada where a pedophile
asked the courts to make castration part of his punishment. He wasn't askiing for leniency elsewhere ie:less time for doing it, he just knew that when he was released again, he'd re-offend. His request was flatly denied.