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what was meant to be => all people
united by love bonds and knowledge, chakra is use for good stuff only and as a way to communicate with others.
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what happened => all people
divided by hate because they lost their unity outside (love bonds with friends/family etc) and inside (creation of the ying/yang problematic into human beings, this is the result of the first division of Kaguya into 2 opposite forces imo, Hagoromo failed to bring balance that's probably why humans started to misuse chakra and why his sons started a nasty jealousy grudge about how to deal with people and power issues).
Naruto and Sasuke reconciliation also means the wheel of life stopped its course (no more Indra/Asura, no more grudge and hate, just pure love and understanding), ninshuu came back again thx to them and their mutual sacrifice (their arms).