Man's animalic passions are part of the problem. The Fathers recognize this. But I think Orthodoxy goes a little bit beyond that. There is indeed a corruption in human nature, or call it a dysfunction if you prefer to use modernist terminology. There is much reference in the Fathers to ascetical exercises which restore the body/mind/soul complex to its proper (created) harmonious state of functioning. Then it goes beyond that because Orthodoxy deals therapeutically with the problem of sin, through catharsis and teaching us how to live continuously in a state of repentance. In so doing we are deified.
The doctrine of deification is always, however, couched within limits -- spiritual perfection is always a progression, and always limited to the extent to which it is possible to attain perfection while still in a physical body. Does this make us gnostic, with some kind of dualistic relationship between the physical and spiritual? Heaven forbid!
Also, there is the teaching on the nous. Everyone is born with a soul, but the nous is something that has to be developed. And some people are just more spiritually receptive and sensitive than others. Why is it that some are receptive and others -- good people in fact -- are not? We don't know. Then you have the problem of history, which seems to have a spiritual life of its own. There are ages in which the vast majority of people become spiritually deadened. So, what you have in Orthodoxy is a reticence to over define things. Again, we rely on symbols and images to convey spiritual truths, because we recognize that you cannot nail the problems of evil, sin and death in purely propositional terms. The images are employed to assist us in identifying who and what we are so that we are not deluded into thinking that our existence and our problems are unique to our selves. And then we have a set of practical, healing protocols that are designed to change our very nature.
I think this statement sums it up:
If Orthodoxy is presented and provided like a Christianity
that does not heal (even though its chief role is healing), then how is it
different to a superstition?