Difference of academic reading and reading for pleasure

Why we read what we read? We read something because it is fun, but sometimes we read to get knowledge. We consider former as reading for pleasure and the other as academic reading. There are three differences between academic reading and reading for pleasure.
To begin, reading materials are different. A material of academic reading is professional such as theses, articles and scientific journals. However, that of reading for enjoyment is easier and more general things such as comic books. For example, nobody read a scientific journal for amusement because it needs a basic knowledge to understand. We get a headache instead of pleasure.
Secondly, Academic reading takes more time than reading for pleasure. When we read essays, we deeply concentrate on that. If we don’t understand contents, we read again and again until we understand it. However, we don’t read carefully while reading for fun. In addition, sometimes we don’t try to understand it.
Lastly, academic reading is not just reading, but reading having a purpose that we want information to make our own. After academic reading, we memorize or write down contents that we think it is important because we want our knowledge to mix with information got from reading. Also, in order to digest information into our own knowledge, we should have critical view to information and know how to discriminate what information is useful. However, after reading for amusement, we hardly think carefully about the contents.
To sum, academic reading and reading for pleasure are different because of difference purpose. While academic reading requires more time to understand and need critical view, but reading for pleasure doesn’t need that kind of things. Information that we get from academic reading lasts constantly, but reading for pleasure lasts instantly.