I think you don't want to understand me. Why? I will try to explain to you a basic concept. you are right in saying that for now and the close future it's impossible to prevent all first time rapist from coming to existence, however you fail to anticipate the progress of individual and collective defense solutions. But actually, now, it's possible, without difficulties to eliminate all those that have chosen to become a rapist, i.e. one or more than one proved act, makes you fit the definition of a rapist. The simple fact that there exist multirecidivists, that have raped again after jail prove how delusional you are.
If you think that by wiping out rapists from existence mankind lose something, we are definitely in conflict. The level of risk you want my children to carry is incompatible with my risk assessment, and what I consider a safe realist environment. Furthermore you rise an interesting argument, look you said your self in your argument that someone with a high risk profile didn't sin, as such he didn't sin what ever the machine says (which is non-rapist, in preemptive the definition of the threshold is always the interesting discussion ), and as such how could you force someone to be reeducated? I feel safer to clean once the mess happen than remove every "temptations"... it effectively cost in risk but the reward is that everyone is free to walk toward the Path consciously and not forcibly, giving hope, and Mankind a chance. What I don't like is those that want to abuse mercy by exploiting it. you rape, you die. simple, clear, clean, understandable, applicable, and just. There is no revenge, but an act (rape), that lead to consequences (death), like a protocol. No Emotions. No perceptions, but a chain of events.