Of the problems the human race and more importantly life on planet earth have, getting humans to Mars is way way down the list. We are already on the only planet we know of that can support life. Mars has no atmosphere, no magnetic field, no liquid water, solar is a 1/3rd weaker than it is on earth and that is when there aren't weeks long dust storms. There won't be people living on Mars in his lifetime. Maybe crewed visits but we are years and years away from that. And even if we do eventually have people living on Mars they will be totally reliant on Earth, so if Earth was hit by an asteroid they'd all be dead as well.
I'd have more respect for the guy if he did something about the problems we have on Earth rather some vanity Mars project that won't happen.
Duh, it's easier to make the climate on Mars livable if Elon is doing it.
Trying to make our own climate livable is a waste of time if anybody else is doing it.
Roar logic....