Why do people keep a blog? Some might say: "They are just lonely" or "They are trying to attract attention". It can apply to some individuals, but as long as it doesn't cause any harm, I don't think there is something wrong with keeping one because of your loneliness. Most of the time it's a way of expressing yourself, sharing useful information with others and just a hobby. One can think that bloggers are trying to get famous this way, same as starting from appearing in reality shows in order to become an actor/actress or a showman. I would disagree here, even though it's true, judging people in this disrespectful and snobbish way won't get you far in this life. People judge others for things they do themselves, because of jealousy: they couldn't come with an idea themselves...
In my opinion blogs help us develop our communication skills in terms, that one wouldn't use social networking style like: "WT" instead of "WHAT" and so on. It definitely depends on a blog, but as I imagine it - it is sort of personal web-portal, e-magazine of your own.
I came with an idea of creating my own blog long time ago. Of course, I wasn't the first one to invent it, I was inspired by great bloggers and just examples from movies and books. Looking at Carrie ("Sex and the City") working on her column in a magazine made me want to sit down and start writing, but frankly, I can be lazy. I am a writer myself, but the one you might think of. I write things for my self, some notes, thoughts. Expressing my feelings on a paper, I even came up with a book. But I don't think of myself as of THE WRITER, it's just my hobby. Everyday I have thousands of thoughts, which I share