[Moonman62]

Put it in orbit around the moon or a Lagrange point. It would be safer while still keeping most of the benefits.

Anyway, Earth still has plenty of resources. Mining asteroids could be more economical hundreds or thousands of years from now when resources are more scarce and technology is more reliable.

[Errant]

I like your Lagrange point.

On costs however, what is the cost per pound to put something into earth orbit? I'd bet it would be more economical to manufacture some items on-site from basic materials available from asteroids.