hobbies and interest
...because many medias boast it and advertise it much more, so many people start to crazy about it and collect it gor an hobby. Secondly, ecnomic factor also effect people who revise their advocation. They make more money and play more quality sports. For instance, they play golf instead of bowling. On the other hand, if they want to make more money, habbies also reflect their social ecnomic degree, so they can use it for social purpose and express how good they are. The third reason is about personal factor. As mentioned before, the trend of society and ecnomic improvement are the second reason but personal factor. People change over and over. They were easily effected by anythings. Sometimes people want to prove how cool they are, especialy in young people, or persuade fashion in order to show their level. Terefore, they revise their advocation to coincide with our society. For example, they were interesting in exercise of TaiBo, but they start to learn Yu-Ga after TaiBo is not fashin...