When negotiations break down and a dispute cannot be settled, attorneys commonly blame their adversaries, often questioning their ethics or their judgment. After interviewing many attorneys, we have come to believe much of the criticism is directed at strategic moves in negotiation. But strategic ploys are not the only reason dispute resolution fails. Rather, our research also suggest that a genuine desire for vindication through trial or other formal process may be very significant in some types of cases where bargaining breaks down.
Gross, Samuel R. "Why Civil Cases Go to Trial: Strategic Bargaining and the Desire for Vindication." K. D. Syverud, co-author. Disp. Resol. Mag. 4, no. 2 (1997): 21-4.