While money can certainly buy a lot of goodies that make us happy, it cannot buy true friendship , the reciprocal attachment that fills the needforaffiliation.
According to Greek philosophy, one of the defining characteristics of humanity that distinguishes it from other forms of existence is a deeply engrained social instinct, the needfor association and affiliation with others, a needfor friendship.
Socrates, Plato, and Aristotle viewed the formation of society as a reflection of the profound needfor human affiliation rather than simply a contractual arrangement between otherwise detached individuals.