John Cena has conquered and accomplished everything on our current home-world Earth. This is why he must be the first man to walk on Mars, to bless our future home-world with his presence. Another VITAL reason we need John Cena on Mars is so we have the best wrestler alive to fight off the possible Aliens that may secretly inhabit the desolate planet. If the Aliens are not hostile John Cena will also be able to trade his rapping skills to the aliens for new tech and equipment to advance our technological footprint. There is no other option for as good as John Cena to be the first man on Mars