let's try it again
Want to make a bet there will be no humans on Mars before 2030? Wish I'd lose that bet (if the mission didn't break the bank), but I doubt it.
As far as "time divided by zero" is infinite, if I understand what that means, then spending hundreds of billions to get humans to Mars and back safely will also delay science that could be done by robots much sooner.
And you haven't bothered to compare apples to apples. What could a human Mars mission do with the $1 billion that MERs cost? Wear even fancier pretend space suits as toodle around the Arctic, I guess.