Its not Antarctica because Antarctica is very heavily claimed at this point. But Mars? You'd be amongst the first colonists of a new planet. You'd be helping build something which may outlast Earthbound habitation, and moves us out of the current resource paradigm (exactly 1 planet).
And unlike LEO you'd have the possibility of the local resources to set up something permanent.
But I mean hey, its not perfect - I'd move to the Asteroid belt or Jupiter system if I could. Though my real enthusiasm would be diverting comets to add water to Venus - since get the atmosphere well, out of the atmosphere and you're looking at Earth 2.