Why Blogging Helps Your Success

I have been blogging from the last couple of months and believe me I am enjoying it. But there are some issues that bothers my mind: is blogging doing any good to society? Or is it just a waste of time? I don't think that it is a waste of time because there are so many Bloggers who not only earning from the blogging but also benefiting the society in their own ways. Also some times the question