I think it depends but I do think the prison system does need some reforms. At least, I think things should be revised more for things on that aren't as dangerous for society. I don't think people who may have been convicted of murder should be easily released. I don't really like the death penalty either but and I just don't know what is the best option.
In Finland prison for most people means that they have evenings and weekends at home, and can even take holidays. Seems to work better than incarceration.