'Buried alive': the old men stuck in Britain’s prisons
theguardian.com
theguardian.com
As for the other elderly, although there is not much of a risk that these elderly prisoners will fall back to a life of crime, they are still there for a reason. One of the prisoners used as an example has been convicted of a sex attack he committed when he was 68. Another prisoner used as an example has committed several serious crimes, each worse than the last. He's been given multiple chances to better himself; he didn't, so he has to face the consequences.
We can hardly stop punishing criminals "because they're too old". The whole idea of a prison is that you get less freedom and luxuries than the people outside. Putting prisoners in a special home would give them the same (and for some people, even more) luxuries than the elderly outside the prison have.
Actually, here in Germany, that is possible. You can be "vollzugsuntauglich" which means being unable to be in prison. Mental sickness is one of the reasons. Others are not as clearly defined, but old age is a common one. (For those interested: §455 StPO, I didn't find an English translation with a quick search)
Being inclined to utilitarianism, my personal view is that if a person isn't a risk to society any more, we probably shouldn't be using resources to prove a moral point.
Maybe house arrest would be a good compromise for elderly prisoners?
There's also protection (which I think you allude to) and deterrent. If life no longer "means life", will that increase criminality because there is less of a deterrent?
I'm not taking any position on this; just pointing out that it should be considered in addition to rehabilitation, punishment and protection.
For an answer to that, have a look into New Zealand's criminal law system. Life there means, I think, about 15 years.
So what do you do with a individual which is intellecutal highly capable, but completely unable to make a moral decision.
http://www.nytimes.com/2012/02/26/health/dealing-with-dement...
Let's say we release all these old people from prison as the article suggests. Where would they go? Do they have someone to take care of them?
It seems more reasonable that these people should be in the mental health system? Possibly committed?
Letting these people loose on the streets seems like the worst idea.
... so that the workers in the Courts and Corrections industry can stay employed.
I wonder if anyone's pointed it out to them.