AFAIK the main benefit would be lower gravity for launching rockets and easier access (again because of gravity) to mining resources in space. Broadly related:

AFAIK the main benefit would be lower gravity for launching rockets and easier access (again because of gravity) to mining resources in space. Broadly related: https://en.wikipedia.org/wiki/In_situ_resource_utilization https://en.wikipedia.org/wiki/In_situ_resource_utilization