Well...war kills lots of people. That is a negative thing. BUT, it frees up resources for the survivors. It's God's way when He/She says "The human population is muchly too high."
Somewhere there is a stone/rock that has etched on it the ideal size for the world's population and I believe is is 500,000. We are over 7 billion strong so that means lots of weeding out. What is left after that? A polluted world in which nothing grows. Polluted water. Polluted air. For how long? Thank you for your reply Ele.
I'm not sure wars are "good." They can be neccessary, just, waged well and efficiently, and have good results; but I do not find them desirable in and of themsleves.