The offending had a high abuse of trust, with many of the man's victims staying in his home with him as an adult supervisor.
Two health assessments of the man placed him at "well above average" and "above average" risk of reoffending and said he had a strong drive to engage in sex with children. He created situations that would enable him to be alone with them and where this wasn't possible, he did not care if there was a risk of being caught.
One offence occurred in the backseat of a van the victim's mother was driving, and another offence occurred when family members were in the next room.
The offending began when he was 13 and continued until he was 51.
Although the man had attempted rehabilitation by attending WellStop – a community programme aimed at preventing sexual abuse – Justice Gwyn said she was not convinced this effort was sincere, and was more "simply ticking a box" as he did not disclose the full details of his offending, and then went on to reoffend.
He said he did not recall a number of the charges, but pleaded guilty because "it's something I would do".
A number of victim impact statements read to the court highlighted how serious the impact of the offending was.
"I am unable to feel safe in my body, love myself or be comfortable. My body is not safe, and it is not mine....[the offender] took a part of my life I will never get back. You took my innocence away."
Another statement read to the court said the victim was nine years old when she was abused.
"I was not old enough to understand what you were doing, but I understand what you have done to my family. I have tried my hardest to block those memories out and I hope from today you can never hurt anyone again."
In sentencing, Justice Gwyn acknowledged the man's views of sex were distorted, due to being a victim of child sex abuse himself but to reflect the seriousness of his offending she sentenced him to preventive detention – which means his release will be up to Corrections staff and the Parole Board. He must serve a minimum period of seven years.
She told the man's victims, some of whom were in court, that she recognised his sentencing would not "bring closure or any other glib phrases" but that she hoped they could find some more space in their heads to heal from his abuse.
SEXUAL HARM - DO YOU NEED HELP?
If it's an emergency and you feel that you or someone else is at risk, call 111.
If you've ever experienced sexual assault or abuse and need to talk to someone contact the Safe to Talk confidential crisis helpline on:
• Text 4334 and they will respond
• Email support@safetotalk.nz
• Visit https://safetotalk.nz/contact-us/ for an online chat
Alternatively contact your local police station -
If you have been abused, remember it's not your fault.