With wisdom comes conservative values.

Actually, in terms of prison, I've gotten both more liberal and more conservative at the same time. It depends on the individual.
For some people who commit a crime, putting them in jail for a long time only turns them into a violent criminal thug, unable to operate in society. They would've learned their lesson and changed their life after being in jail for a relatively short time behind bars.
But for others, no matter how long they're away, no matter how many chances, no matter what situation they're given, they are completely unable to function among the regular population and you might as well just throw away the key.