13 With respect to his history and antecedents, it was put that the appellant believed that he had been abused by priests in a Catholic institution, although he did not remember which institution. During his 20s, the appellant's mother took up with a man, who became a good step-father to the appellant. After two years, however, that man died. This caused the appellant, who was then 24 years old, to 'go off the rails' and start using heroin (where previously he had only used cannabis). Between 1995 and 2005, during his second marriage, the appellant was taking methadone, was off heroin, and was not offending. With the break-up of that marriage, the appellant was homeless and started using heroin again. Most of the offending in the appellant's history was drug related. A recent urine screen, however, tested negative except for methadone.