In the past , people had relationship with others because they grew up together in the same community or they went to elementary school together or just happened to meet during their childhood and liked each other and bassically enjoyed the same in life without thinking of an personal interest.
Today, the world is totally different. Most people become friends because of interest.The interest can be financial( you maybe rich or come from a rich family) For example, today,the first thing a person you just meet will ask you is : What do you do? then when do you live?