War is terrible. However, I think we are already seeing a different kind of WWIII playing out. Its not happening with guns and tanks, but its happening on the internet. Cyber warfare is being engaged on a daily basis between countries. In addition, there are countless proxy wars taking place around the world. I don't expect a full on war between superpowers because of the fact that nuclear weapons now exist. They would pretty much destroy each other and there will be no winners.
Cyber warfare is perhaps better than the real warfare. Till now, no lives have been lost as a result of cyber warfare. Also, the cyber warfare targets politicians as well as soldiers, unlike the physical war where the politicians are safe.
Cyber war, political and diplomatic war and war intelligence have always existed and are maintained to this day. Just real physical war, it is the last argument in someone's evidentiary basis of the correctness and views.