I was thinking, I'm not saying that World War 3 was a good thing for earth in the Star Trek timeline but I feel it may have been needed because the only way for humanity to mature was for everything to get torn down (which literally happened) so it could all be rebuilt into a united earth that was ready to start exploring the stars. I really believe that if Zephram had invented warp drive before World War 3 happened (as well as First Contact happening before WW 3) it wouldn't have united the world. There was no way that the way society before the apocalypse was was ever going to truly change.
Now, for the earth-like society in this episode, it was good that they were spared a devastating world war before it could ever happen so that they could instead unite to start exploring space but my question is is this society mature enough to completely stop fighting each other even after they build a fleet of ships? Just because those two leaders put their differences aside doesn't mean that it won't take years and years for all grudges and hostilities to completely subside. I'm just worried that all that would happen is instead of fighting each other on their planet, they would just start fighting each other in space.