Many old people in the West live alone (by their choice) and may be suffering from 老年痴呆症 (dementia/Alzheimer's Disease). They repeat the same thing (buying records, in this case) over and over. My mother, who is suffering from 老年痴呆症, does the same thing....except with clothes.
我收藏的經典粵語流行曲CD (now over 1,500,000 views - as of April 9, 2014)