I don't think some kinds of extracurricular activities are better than others. In my concept, every extracurricular activety has its advantages and disadvantages. For example, playing soccer makes you strong, but it may make you injured; a writing club benefits you a lot in your writing skills, but if you focus on it too much, it may make you mind-set; even playing video games is good for your creativity and the harmony between your mind and fingers, but it is addictive. It is difficult to say whose advantages are overweigh the others' or to confirm which activity has more disadvantages. So they should be basically treated equally. Besides, when defining the importance of an extracurricular activity, the interest is extremely significant factor we should consider. Normally, interest is the best teacher, it would affect you much more than any other factors. When doing a extracurricular activity which you are interested in, you would enjoy it rather than just do it, you even cannot feel the time flying. As a result, you have a high efficiency. You may get more benefits when you take part in the activity you are interested in than the ones when you participate the activity you dislike though the latter one may be generally considered better than the previous one. So I think purhaps a activity is better for most people, but it may not be better for you. The key is interest.