There's no need to be angry. Plea deals are practical negotiations, not a deliberate slight of you or other citizens who feel as you do. 

As far as allowing pleas and negotiating lower sentences is concerned, you do realize that we taxpayers pay for every day a felon spends incarcerated, right? The goal of our corrections system is to discourage future criminal offenses, and Turnipseed serving 20 months in prison will likely serve that objective as well as 40 months, but at half the cost. I'm not interested in paying $3000 per month to satisfy your sense of vindictiveness.