Unless I misread something, you didn't actually deny that peace was the ultimate cause of the problems.
"Detriment to our entire species" is also far from proven. This far mankind has done pretty well even with all the wars. While it's certainly unfortunate for the ones actually involved in the war, it might be better for "the greater good". Or maybe it isn't. The point is that you shouldn't dismiss an argument just because it's politically incorrect nowadays.
I've always thought that it was the challenge that caused society to work towards a common goal. Violence is one part of that, but the space race worked effectively (though that was closely related to the cold war).
"Detriment to our entire species" is also far from proven. This far mankind has done pretty well even with all the wars. While it's certainly unfortunate for the ones actually involved in the war, it might be better for "the greater good". Or maybe it isn't. The point is that you shouldn't dismiss an argument just because it's politically incorrect nowadays.