Why in the world would I have a blog?

One of the questions I have often had in life is why Blog? I possibly had not asked that to myself until a certain class where we received the assignment to start a Blog. At first the assignment didn't excite me very much but then I realized it would be a perfect excuse since I haven't written in a journal since I got home from my mission over 6 months ago. So for at least the next 3 months I will be able to keep track a little bit of my life....