Yeah just dig tunnels for living space. And no atmosphere so you could manufacture or mine resources on the moon and just shoot them towards earth with an electromagnetic railgun.
Nono no need to LIVE on the moon. Living in microgravity is bad for health. Living in rotating space habitats is the only realistic way we get space cities.
But yes, the moon definitely has the advantage of no atmosphere. Basically, the moon is where we place our industries (for the orbital and interplanetary economies).
Artemis is about Mars. Exploring the moon is a bonus but we still need to run a space station outside of Earth’s magnetic field to figure out how to protect astronauts from radiation and ֆքǟƈɛ ʍǟɖռɛֆֆ or whatever fresh Hell space has to offer. We won’t be bathed in glory even if we make it to Mars if everyone dies.