As a society, we have no real frontiers. This is bad for humans. We need to strive, to live for something more than constant satiety of our needs. We need to boldly go where no one has gone before.
Imagine an economy where stuff you need to survive is basically free. Food, clothing, shelter, furniture, entertainment. All of that. Imagine this comes true in your lifetime. The only real things that stand in the way of this are lack of almost free energy and almost free raw materials.
Suppose the exploration and exploitation of space provides both of these missing things. We're set, right?
There are already people who know this is how it will go down. They're slowly gathering capital, influence, the power they need to make it so. They will literally be the ones that provide us all with our salvation.
We can stop moldering in our complacency, fighting over things that don't matter. If we only had challenges.