There is the parable of a very wealthy person, who through nature's wrath had lost his appetite. Some beggar approached him and asked, "Please give me something. I am hungry". The man surprisingly enquired, "What? Hunger? How is it? Please give me something of that hunger. For years I have not known what hunger is like. I do not relish any dish."
So hunger exists everywhere, in some places it takes the shape of primary needs; in other places, it is of a higher level. It is also a great service to give enlightenment to this latter class of people. For these people, an inner illumination is necessary as their primary wants are being fully satisfied; life becomes a burden to them in the absence of proper enlightenment. They need to be instructed in what is life, what is its implication, what is meant by happiness, where does it reside and how it is to be obtained and such other fundamentals of life.
There is nothing like, less important and more important or higher and lower service.
The person who needs service has to be satisfied. Thus one will realize that service covers the entire field of human life. It encompasses all human activities. Nothing is excluded from this.