No private prisons, please.   Their profit and success is gained by increasing the number of prisoners and therefore, it is an increasing crime rate to have more bodies in prison beds that is good for private prison owners and investors.  Decreasing crime is antithetical to the bottom line of a private prison.  

But, decreasing crime is good for society.  It is our responsibility for our own welfare to have a Department of Corrections that functions as just that, corrections.  And, that is another discussion.  As Charles wrote, "No doubt, criminals can fake remorse. But they are also human beings, and people change."    The Department of Corrections is a collective, governmental function and SHOULD NOT be for profit.  It's an unavoidable but necessary expense.  

Let's look at some other country's penal systems that have much, much lower recidivism rates.  What are they doing right that we could do ourselves if we tried?  After all, people change, that means changing our ways, also.