A pacifist at heart, Itachi did not actually like fighting and would avoid it when she could. As such, she preferred to rely on Genjutsu as a first option, ending fights with as little damage as possible. When she couldn't avoid actual combat, she would end the fight as quickly as she could, all the while holding back as much as possible. Despite this, Itachi felt her own needs were secondary to the greater good's and to that end she became a shinobi.