Your post puts it all in perspective Pam. Prison sentences are often far too short, and don't reflect the gravity of what has happened. Murderers get released on life licence and, all of a sudden, they start complaining that they've done their time, so why can't the authorities stop bringing up the crime they committed? They are serving the life sentence until they themselves die, albeit supervised, then unsupervised, in the community.
The public are not always aware, but quite a few lifers get called back to prison, even ten or more years after release, if their behaviour gives cause for concern. It's a tough road to re-release, once a lifer has been recalled.