Of the groups surveyed, 21 percent revealed they collected stamps in order to increase their knowledge, while 60 percent admitted that stamp collection was merely an entertaining hobby. Only a small percentage of the collecting group actually used this as a source of income or investment. Chu Shou-i, a retired professor of bacteriology at the National Defense Medical Center is an avid collector.
但在廖吉昌的研究報告中卻發現，把集郵當成益智活動的人佔 21.37％，當做娛樂消遣的人高達 60.92％，只有極少部分的人為了儲財、投資而集郵。