I already have blogs on a couple of different subjects. My family life, my thoughts about video production (that one's getting revamped and restarted), a review of what I'm finding out about the mortgage crisis, and so on.
I felt the need to start a blog that was not about any subject at all, where I could put random thoughts as they occur to me. Are these valuable thoughts? Probably not. But it's easier to dump them into a blog then to let them rattle around inside my head, where they might cause who knows what kind of damage.
Consider it a form of mental hygiene. Lucky for you, there are plenty of meaningful blogs out there (perhaps, even, one of mine), and leaving this one is a simple click away.
Are you still here?