why people fight? reason for violence?

It is all for accomplishing self interest . There are some people in this world who create several conflicting issues to make their own benefits and push this whole world in the fire of war and violence. Humanity, Love, Compassion are the words that have no meaning for them , they only know fight , war, violence and hatred.

I've always associated violence with being ignorant. If someone cannot express themselves in words, they result to violence to get their point across. In a worldly perspective, there have been times, such as WWII, that I can confidently back my country (USA) up and say we did the right thing by going over there and fighting a war. However, if it hadn't been for the initial violence, WWII would've never been necessary. So, you have leaders/countries that are just simply evil to the core.