I guess this is something some of us wonder. Is it worth the effort? The time?
Fair questions but something you should look into if you are serious about creating your own personal brand.
I have a tendency to be a perfeccionist but I think that some things you need to get your hands dirty with to get better and learn by doing, and it seems to me that blogginf falls into this category.
This article may encourage some to start doing it instead of over doing it and spending too much time on preparation and start creating content and sharing your thoughts, interests, etc.
Give it a read and maybe you will find it interesting too.