There are many out there now self-publishing. They're decisions to head down this path have come about for a variety of reasons and there is nothing wrong with it. There have been many successful writers who have self-published, just as there has been many writers who have been traditionally published that bombed.
In some cases, writers elect to push for self-publishing because it's the fastest way to get your book out there. For time-sensitive, non-fiction books, this is likely the path you'll take. However, there is a HUGE difference between (1) producing a quality product that was self-published and (2) self-publishing because you want it out there.
In a previous post, I spoke about rushing the process. One flavor of the rush-the-process beast is the publish-without-editing variant.