Terraforming mars is likely a few thousand years away. We have to add an ozone layer, magnetic field, and thicken the current atmosphere and balance it with oxygen. Mars’ air is over 150 times thinner than Earth’s, and it’s about 95% carbon dioxide. A death sentence to humans. Mars reminds us that Earth is our home. We evolved with its atmosphere. The tech needed to make Mars comfortable is he same tech we need here on Earth if disaster strikes. The wiser path is obvious: protect Earth, prepare for disasters inline with preparing to terraform Mars, and prepare to repair the world we already have.