Psychiatrists are useful. You are an Orthodox Christian, and not a Scientologist, right?
Seriously however, psychiatrists can help mental disorders. In some cases, a person might have depression, etc. due to, for example, a chemical imbalance in their brain. A pschiatrist can detect this problem, and prescribe treatment, for example, in the form of medication.
And the death penalty must be abolished. If not for moral reasons, but for practical reasons (the US is capitalist after all). For example, in the US our government is so inefficient it takes many years of death row for a person to be executed, and the execution itself is very expensive. Even if the exexutions happened right away, they would only be cheaper than prison if the prisoner was going to be a prisoner for over thirty years.