Love your post.

To me this all boils down to globalization. Too many people feel divided, feel the need to compete because they are so socially conditioned into feeling an 'us-them' condition towards many different societies and people.

When so many cultures can't even communicate with each other it makes sense that there would be conflict. The only way to become united is to globalize. Expand projects like the European Union and create a universal language. Decentralize currency but still have different structures to govern different lands and cultures and stuff.

Or if aliens came all would be well. In the snap of a finger all of humanity is 'us'. Fingers crossed for peaceful aliens XD.

Loved the post, keep it up!