I completely agree. I ran a blog for about three years. It was very eclectic, discussing everything from politics to pop culture. I had well over 500 posts (real posts) when I decided to stop writing in 2005, because very few people were reading it, and I never really had the tech saavy to monetize it or increase its traffic.
I may soon start another blog, but this time it will be focused on one topic or one genre, instead of being all over the place like my previous blog.
StevePavlina.com has inspired a lot of blogs. Some great ones, some not-so-great ones, and some that simply copy topics from other blogs. This is sad, especially in the Personal Development field.
Writing is not for everyone. Maybe we should stick to what we know and be good at that.