For Lincoln, it wasn’t a choice between peace and war. It was a choice between war and a divided nation. Peace would not have solved the larger issue of whether slavery should be tolerated. If he had framed the issue as a choice between peace and war, the country might look quite different now. To make a difficult decision, you have to consider what you want most, the ultimate goal, and then consider what is necessary to get there. It may be a long road to reach that goal, but if you settle along the way, you may not ever get there.