The more economically affluent a country is, the more acute the problem tends to be. People in economically and materially rich countries tend to have more people suffering from severe 'emptiness' and 'heartlessness'. In response to Abraham Maslow's view that human beings finally satisfy all of their basic needs and begin to be overwhelmed by higher-order needs such as the desire for self-actualization, Yoshihiko Morodomi argues that an "affluent society" is basically Since it is a society where it is easy to satisfy desires, it is easy for higher-order desires to be expressed, and it is said that there is an aspect that it is easy to suffer the pain of not being satisfied.
It is said that there are three periods in one's life when such a proposition captures a person's heart. adolescence, middle age and old age. Many of those who have gone through puberty have their own answers at that stage. Such questions can also grip the mind in middle age. This is also known as a "mid-life crisis". At this stage, I asked myself again, "What am I expected to do with the rest of my life?" Isn't that right?", and this kind of question can catch the heart even in old age. According to Mieko Kamiya, a large part of the grief of old age is due to the inability to answer with sufficient certainty the question, ``Is my existence necessary for what or for whom?'' Therefore, in order to give the elderly a sense of purpose in life, it is recommended that the elderly should be assigned some kind of role. In addition, it is important for people to feel that the presence of the elderly is necessary for them as a relationship of love.