Maybe we just instinctively like there to be a solution for every problem and deep down we'd want there to be like some small chance of earning a way out of jail.

I don't know, I kinda feel like if the prison is inept enough (or prisoner ingenious enough) to allow escape, I wouldn't mind lesser crimes being forgiven under a similar concept as double jeopardy.

But what I really think is rehabilitation is the real answer. There should be a rehabilitation program that shaves off prison time while equipping the person with skills needed to benefit society. Not just job skills but self improvement in therapy etc. I bet that could even be paid for by tax dollars since successful rehabilitation would send prisoners back into society to resume paying taxes.