Blogs, who are they for?

Reading about blogging and thinking about blogging has made me wonder who is really using blogs. Until I began this ITs program I had little knowlege about blogging and I am sure many other people not involved in professional occupations are as ignorant as I was, and to some degree still am. As popular as blogging has become, it seems to target a specific population of the net. As a result of blogging being new to me, I would not know where to begin to expose myself to other blogs on the net. I think those individuals involved in certain occupations, activities, political groups, etc. blog a great deal as they are common practice for that population. I have friends in law enforcement, sales, and the manual labor arena that have certainly heard of blogs, but find no relevance to them. It makes me wonder what can be done to make blogging more popular to the entire net population rather than the select groups that find blogging valuable and entertaining. Could exposure to blogging in our schools open those doors to broaden the use of blogs in today's cyber space?