Before writing, the writer first reflects on his life experiences; especially those related to social issues. Then, it's all formulated into a good written form. This writing, if evaluated, can be used to correct our own behavior and our relationships (as individual) with other people (as individual too) in the (near) future.
In addition, just writing down personal problems, the feelings concerned will be relieved; the load is reduced. Likewise, if we read other other people's cases of social problems, we can learn a lot from them.
Especially when writing real social studies, many benefits for ourself and others. On a larger scale, this collection of notes (writings) originating from various individuals, as a result of studies on social issues, of course, can also contribute to the improvement of people's behaviour in general.