I agree that it is interesting but we haven't learned how to take care of this planet and it has unlimited (with appropriate behavior/population changes) resour

I agree that it is interesting but we haven't learned how to take care of this planet and it has unlimited (with appropriate behavior/population changes) resources. We never consider that humans evolved for this gravity and have no permanent home on the moon but people want to terraform Mars or Venus. Even if we did, we'd destroy them even quicker. We don't need another option until we've proven we can take care of the free gift we already have.