Blogging: Simply a Hobby? Or Valuable Source?

Regardless of content or purpose, blogging is simply not for everyone, and I happen to be a member of the group that does not mesh well with blogging.  However, I find that it is often beneficial and informative to read various blog posts.  I do think it is important, though, to point out the differences between journalism and blogging.  In my opinion, I believe they are very different. 
Journalism is intended to be an unbiased source of information.  Now, saying all the newspapers, tv shows, and news radio stations out there are unbiased is not true, as most would agree.  Yet, reporters still do provide the public with news as it is happening, and in a way that must go beyond the personal views of that person in order to reach the viewer, reader, or listener. A blogger, though, should not even pretend to be an unbiased source, as most people use their blogs for the purpose of stating their opinions and beliefs on a matter.  Also, most blogs reflect upon news after it has happened and use their site to comment on an event, not to report "breaking news." 
I don't think it is impossible for a blog to serve journalistic purposes, as I'm sure there are blogs out there that state and discuss news more effectively than some news outlets today.  However, I feel that simply by definition, blogging is not journalism, as there are many other uses for a blog other than just discussing news.  One person might devote their entire blog to discussing their feelings on Mickey Mouse, as a blog can be about anything and everyting.  That is not the purpose of journalism, though. 
So, my opinion on blogging is split.  When it comes to reading a blog as a replacement for watching the news, I don't think it is effective.  Yet, if I was hoping to read blogs containing public opinions on a new movie that was relased, I believe it's a different story. 
Even though some blogs may be enjoyable to read or beneficial in certain instances, that is where my appreciation for them ends, as I do not enjoy the actual action of "blogging" and writing blog posts.