Writing and posting is as much about self expression as it is about getting your message across. It seems like many blogs start because the writer wants to express themselves and they really don't care if they aren't recognized but as the writing goes on, it becomes something else.
I think there is an expectation by some who treat blogs as "I'm writing because I want to make money blogging about my experience".
The reality is, if you find yourself up at the middle of the night writing, and each time you write you find things you hate or love about your style, you're blogging for the right reasons. It might feel like a drag because it is a lot of extra work outside of your normal paying job. Just keep hammering on and you will find the satisfaction you need to keep pursing your interest in writing one way or another.
But if you find it a drag and you get frustrated that no one is reading or listening, you might be doing it for the wrong reasons. A little shift in thinking may be all you need.