Should I write a Book?

I have been thinking about the possibility of writing a book. Should I? Is there a market for such? Is there a need for more "preaching to the choir" or is there a way to move beyond that to "preaching to the heathens" (the authoritarians and government sympathizers).

My idea at this point is to take the content of this blog and work it into a coherent, organized, book. Not an autobiographical book in any sense, other than documenting my philosophy. I would obviously need to write extra stuff to tie it all together as well. I have actually begun the project, just to see what the finished product looks like. I just wonder if it is worth the effort.

I have already asked a couple of people privately. If you think it would be a good thing, or not, let me know. And if any of you know any publishers who might be interested, or know any book store owners who would like to carry such a book, please send them my way.