The 3rd Dictionary definition of DISEASE is as follows
"Any harmful, depraved or morbid condition of the mind or society"
How does that not fit perfectly with HATE and GREED? They are harmful, depraved and certainly a morbid condition of society. Who would argue otherwise?
I say that "greed" ... like "beauty" ... is in the eye of the beholder.
If my neighbor is a millionaire, but doesn't share his wealth with others, who am I (or anyone else) to say he is greedy?
Perhaps he was brought up with nothing, and is afraid of losing everything and being destitute once again. (like those who lived through the Great Depression) Perhaps he wants to be able to pass it on to his family or charities, upon his death. Perhaps he doesn't trust charities (many of whom keep more donations than they spend on helping people).