Gases, minerals and resources could be useful on the other planets, moons and asteroids in the solar system.
Useful to fuel more wars.
Lets be perfectly clear, living on a planet is fucking stupid.
For all the hippy talk is worth we spend epic amounts of resources engineering against this planet.
Between uncontrolled temperature fluctuations(space doesnt transfer like air), wasting energy going against friction, rust, compensating for gravity, digging to get at the earths resources, designing everything to fight against gravity etc.
If we get out of this dam gravity well the last place we wanna go is another hole.
Asteriods are far more economically feasible(once we get there)
unlimited high value minerals.
Ability to manufacturer and construct in zero g.
No friction to fight against.