I’m guessing world peace is thrown around a lot for responses to this question, but love is something that we seemingly don’t have complete control over. Moreover, some of the best friendships are established by going through hard times together. So going off of that alone, we end up with people who are jealous of others, and therefore compete over the one they love, while learning a lot about science and economics. So they find others who are hurt, team up with them, create their own, better version of a country and show off that they are the better love companion, all while figuring out how to best the person they are jealous of. I think the implications are that we end up in something like a world war? I’m no history expert, but I’m pretty sure most wars have come from some country’s desire for either more power or more gold, so they can have a better life or have people singing their praises because they need the adoration affection of many and to be seen as better. Just spit balling here.