I don't agree that it is doomed to fail, but I also don't believe humans are inherently Fallen, and especially not in the particular soteriological sense that Christians believe (i.e. all later generations have inherited the guilt from the single act of disobedience by Adam & Eve dooming all of humanity to endless toil and suffering, as well as an evil nature).
That said, I do think humans behave in sometimes predictable ways, and it might be useful to look at what kinds of choices about society might alleviate suffering and promote well-being and fairness in society.
That said, I don't think that's going to happen without significant social upheaval, and that itself seems to bring about a lot of violence and the kinds of suffering I think we should all avoid ... so, yeah - these are hard problems.