Death may be a good or a bad thing depending on circumstances.
Life is potentiality. The possibility of things happening. Death is the remove of such potentiality.
If you have no hope for the future, if the only possibilities involve different types of miserable ways to live out the rest of your existance, then death may be a good thing.
Otherwise, death is something that should be postponed, either as long as possible or until your life reaches such a horrible state.