I guess there are two answers to this one.......
Firstly, people generally use blogs to talk about their life or experiences. Sometimes, this insight can be quite interesting and sometimes you think "why on earth would anyone write this rubbish".
Example of a "what is the point" blog post:
"yesterday, I travelled on the bus. I was wearing my blue shirt. Maybe, just maybe, tomorrow I will wear my green shirt. I wonder what they will be like, will it make me feel like the leaves on the trees, or the grass under my feet...blah...blah".
You get the picture........
Now, if you ask why WE use blogs, the answer is simple........
It is all to do with quick information transfer and search engine optimisation.
Give us a call and we will explain all.