Elon Musk aside, I am not sure that any actors with the resources to likely make it actually happen are quite ready to put boots on the ground on Mars. On the other hand, I do not see it making all that big a difference to "putting our house in order" here on Earth.The only reason that a tiny part of me is in favour of the mission is the vain hope that the information returned (likely a colossal failure) will go a long way toward changing the collective political will here on earth.
Or to put it more bluntly: Maybe if everyone dies, people on earth will notice that maybe we should put our house in order before venturing out. Stupid way to learn it, IMO, but maybe necessary?
Getting our stuff together here on Earth requires us developing some cultural maturity or die trying, I guess and I do not think we can carry this farther due to site rules.