The notion of abundance and the notion of appreciation are soul mates. Greed can easily be seen as merely a gratitude deficiency - a poisonous expression of fear. The fear with which we live our lives stems in no small degree from our cultural concept that the basic unit is I . That sense is so conditioned into us that we are actually resistant to entering into We . This sense of connectedness beyond the relationships that service our egos in a day to day sense is almost always short lived.
Fear comes in many flavors.
Among them is fear of poverty, of not being able to meet basic needs. Fear of not being enough, not being worthy of love is another flavor. We have not been brought up to trust in a sense of belonging that is unconditional, do not expect that we should be cared for and honored by our communities simply because we are. Our experience of value comes from how we stack up relative to the next guy. We can all pick up a twig and easily break it.