Right from the moment of our birth, we are under the care...

Right from the moment of our birth, we are under the care and kindness of our parents, and then later on in our life when we are oppressed by sickness and become old, we are again dependent on the kindness of others. Since at the beginning and end of our lives we are so dependent on other's kindness, how can it be in the middle that we would neglect kindness towards others?