hi! there's always room for more input, but meanwhile check out these sections in the FAQ*
Are we less violent than in the past?
*see the link on the sidebar or the wiki tab
It really depends on how you define peace. Stable economy, no wars, good relations with other counties, low crime rate, no fear of terrorism, etc. can all be used to describe world peace. But, since you mentioned wars in your post, I'll focus on those. Ironically, one of the leading causes for war is a dispute of profit of some sort or another, but our day and age is estimated to be the most peaceful time in history, contrary to what mainstream news and even reddit would have you believe, because peace is more profitable than war.. There are only 40 armed conflicts around the world currently, and only seven result in more than 1,000 casualities/ year.