Why Blog?

Here's the question. Why do people blog/tweet/update status every five minutes? Do they want people to take an interest? Is it all vanity?

Now here is why I blog. It's a bit like therapy.

I'm able to write/say what I really think, without someone else having to sit down and listen. I can pretend that the whole world is interested, empty out my mind and get on with life.
No damage done, urge to be creative appeased and what I wanted to say...said.

Which makes me feel better about life.

That's why I blog.