Why ? Why do people blog ?

I dont know why ? I keep asking this me at times and yesterday I was confronted with this question again. Why is there a need for me to make myself available to the public. Or is it that ?

I started blogging just for the simple reason to make my presense felt in the vast ocean that we call the web. I have a small website too but that is there mainly to show my portfolio and my resume. But why blog ? and the more confusing part is, why blog when u know that probablly no one will read your blog for a long long time to come and it doesnt matter what I say or do using a blog at this point of time. It’s like a prof. teaching an empty class….

Am I just wasting my time ? I dont know but for now, I intended to carry on. Lets see what happens in the future.