If you have to ask, then the answer is most likely no.
The most interesting blogs I read are the people that don't really care and are just creating things they find interesting.
Quite the opposite - most people who should write ask whether or not they should. My source on that is my foray into the publishing industry. It’s common amongst good writers.
Indeed. It's like starting a business. You probably shouldn't do it, but some people have to.