As far as I can see, Blog consist mainly of 3 types:
"
Personal", "
Informative" and "
Mixed".
Personal blog focus more into the author's life, things they usually do, places they would go and so on. It can be boring or interesting depending on the viewers. In fact most people who do personal blog tend to be like entertainers.
They would do something funny, review on places they liked, opinion on certain stuffs, taking weird or silly pictures, in a way to keep viewers entertained, thus receiving comments that includes praises, opinions and even arguments. They would post a picture of themselves, including some of their friends if permitted so you can like throw a pie on their face when you see them in real live... jk.
Informative blog would talk mainly on certain area such as cars, foods or stuff that don't really concern about the author's life. You don't have to be rich to do review on certain products but you do need to buy things related to it so you can know more about it as well more stuffs to put in your review. It can be other things like news on certain subject or such but most people would google it out easily so informative blog needs to be unique and interesting.
Mixed would include both personal and informative... although most would fall more into personal category like the one you're seeing now as having a mixed blog can be tedious and more work.
Some things about Personal Blog...
Believe it or not, almost everyone creates the blog to express themselves or such to the public where people can know and curious about their life and such. They wish to have lots of visitors as well comments on their site.
For me, personal blog it's not having getting people coming in like friendster or MLM something to see your stuffs but a diary of your personal life, but not private one of course. Do not concern by the lack of hits or comments as personal blog IMO weren't meant for attracting people to come and see your happy-go-lucky life but rather for those who interested to know more about you. It's like a personal information or identity card where people can know more about your hobby, the places you like to go, foods you liked and so on.
In fact, ask yourself why do you have a personal blog in the first place? A
public diary of yourself or a
public attraction of yourself?