Should my first blog post say something worthwhile or simply cover the rants of today?

Am completely new to blogging but I am pretty sure it might be my life's calling. One I write. Nothing worthwhile or educational. Mostly just random reflections and of course my to do lists that I never get around to. But the idea of blogging, writing in order to justify being on the computer, doing something on the computer other than Facebook voyeurism in between Blitzing, of course avoiding the laundry (my children literally change clothes ten times a day EACH!!!), pretending people actually care what I have to say however random (wait I already do that on Facebook) but a whole new venue for that! Sounds like Heaven. Of course with my ADD tendencies it's likely this blog thing will last all of a week. On the other hand I recently made some life changes, pared down my acceptable addictions and have room for a new one so....plus I am unemployed with no prospects and People.com is only so interesting. I think this might be a match made in Heaven. How could I have not found the blog world sooner? I always was a late bloomer. I am off now to practice voyeurism on other blogs, which I guess actually is not voyeurism but the whole point. This should be fun and I am pretty sure it's gonna be a late night!