Why Blog?

I never understood why people blog. Maybe it's because I am vary analytical. I always have a hard time putting my thoughts into words. Even now I'm trying to write this blog as a free write but am having a hard time. I don't see why people enjoy blogging. Does it let you feel like you have a voice? Are you able to stand on your soap box and say what you want and find it liberating? I find it intimidating, knowing that anyone can read it makes me think twice about what I say. The reason I am writing this blog is because it is an assignment for a class. We have to write a blogs for the next couple of weeks. I am a PR major and my professors say it is good to be able to blog that employers look for this in individuals. Is this true and why? Maybe I feel this way because at this moment I don't have a topic to talk about. I understand if you are working for a company you could blog for them and talk about the company and the different campaigns that are going on. And who knows maybe by the end of my assignment I will become a fanatic blogger, we will see.