Visiting Other Blogs...as H.W. Assignment

I visited some of other students' blogs; they all were nice with great deal of personality, I think. Some of them are nicely decorated with pictures, and others are well organized by writings and designs. I was astonished of their great blogs; however, at the same time, I found that some of their writings are written about very personal imformations that I have never known. I wondered why and what drove them to do so. Most of those blogs were edited for only homework assignments, but even so, those show partly but specificly about theselves. In my case, I've never written so specificly about myself, I hope. Well...よくわかりません。