Really the worst case would be to convict someone who is 60 years or older who then dies in prison because of a lack of medical attention.
Are you being satirical here? The rest of your comment, other than this line, seems like you are trying to be serious, but this is so clearly over the line into absurdity I can't tell.
> No prospectors for ever amounting to anything? Get off your high horse, he'd still have 40 years left to do that. Especially for men 40 years is a perfectly fine age to start a family nowadays.
Assuming you are being serious for the moment (and if you arne't, good on you, I honestly wasn't sure): it seems like you are not accounting for any of the realities of the scenario you are describing. What about the trauma and PTSD from living through decades of psychological torture? What about the destroyed social networks? What about the consequences of decades of poor diet and exercise?