Should I start a blog?

It seems as though all of my friends all of a sudden have one, or even two! (Yes I’m talking to you judyprays!) As a firm believer in the sanctity of peer pressure, I’m thinking it might be time to start one of my own. But starting one has so much work attached to it. I mean I’d have to think of a theme and a general tone. On top of that I’d have to become really interesting! I guess what I’m really asking is, Do people really care about what I think about topics such as, but not limited to, the mediocrity of Nicolas Cage’s career post Adaptation and my top 5 reasons on why all insects are out to get me?
What makes a blog interesting? What’s your favorite personal blog?