Sometimes I’m not sure why I started blogging. I’ve wanted to for at least a year, but I’ve just started working on it with any consistency. Writing has always been something I’ve loved. In fact, I can still remember one of my first stories from gradeschool. It was an incredibly predictable western except for the very end when the hero dies by plunging off a cliff. For whatever reason, I’ve also continually been fascinated by plunging off cliffs…and digression.
So, back to the point. Scot McKnight, one of my favorite bloggers, wrote an article that helped clarify my blog-urge. He quotes James Vanoosting who says, “Writing is not pedagogy but an epistemology.” That’s it! I write as a way of knowing. The other thing McKnight describes is that the only way to improve as a writer is simply to write! That’s probably my main motivation here. I can’t start off by writing anything deep, even though I am published (The fascinating titles of these two works are Characterization of exochitinase of cantaloupe fruit tissue & The lymphocyte metalloprotease MDC-L (ADAM 28) is a ligand for the integrin alpha 4 beta 1.). However, I can write regularly with a desire to improve and sharpen my skills. That’s the reason I blog.
mattjudkins.com 
i started and still consider it part of my spiritual discipline, although at times the blog rarely looks spiritual. one of the side effects is that my writing, grammar not included, has gotten better. so my wife says.
I guess it depends on your definition of spiritual, eh? I tend to classify a pretty broad range of things spiritually. It depends on your vision of reality, I think.