Psychiatry has tried to work with the criminal justice system to rehab these offenders, and sadly, nothing works. Chemical castration, surgical castration, diversions like these sex dolls- they've all been tried and failed. The castrated offenders tend to become more violent since they can't get the same kind of sexual release. Wanna see something really fucked up? Check some of the sex offender registries and see how many of them live as close as they can to elementary schools, playgrounds, etc. WRT the sex dolls, yep, the short ones have to be physically "mature".  They'll make the large A-cup or small B-cup breasts with smallish hips and butts adults, even describe them as Japanese, but my 11 year-old daughter is built like that. She had hips when she was an infant LOL.  Every day, I grow more convinced that our problems won't be solved via votes or legislation, but through physical self-remedies.