Why do nonviolence theorists believe their methods are superior to violence?

I am writing a paper on nonviolence and how the philosophy of nonviolence approaches conflict and further analysis on this philosophy. I am just looking for others' point of view to kind of open my mind to different views. There is much more I need to cover on this paper, but I wanted to trigger my mind with what others think to get started and have a side on whether nonviolence really seems to be the right method of resolving issues, locally, nationally, and worldwide.