prisons are expensive to run and maintain in that they require building, maintenance and staffing costs in addition to the costs of food, electricity, heating etc. limitation because, given that prisons are not found to reduce recidivism rates in a large amount of offenders, the cost of running them seems to outweigh the benefits. many argue that the main aim of prisons is to provide victims and their family with some form of retribution rather than to actually reduce recidivism rates. questions credibility.