I blogg for fun, for hobby, and for having something like a forever journal for my kids to read. As well there is many recipes and crochet pattern on my blog, that I keep simply baceuse I do not have any recipe books or anything like that. My blog is something that I can always get back to if I'm looking for the recipe :)
I'm hoping that someday my kids will be reading it like a online scrapbook :). I do not think I would want to change the character of my blog just to get paid for that.
Blogging for me is both a hobby and a business. I only started doing it this year and I love it. I used to manage my own true html website and it was so difficult managing the coding to get things to look right. The blog has allowed me to manage it so easily and it takes so little time.