Blogging also creates something that never existed, and likely never would have existed.

If you believe consciousness is a way for the universe to know itself, then expressing your truth in a blog is a way to participate in that process. The random assortment of atoms that make up "you" are gifting the universe a novel creation that could not have existed otherwise.

Whether you think this is of value is a different topic, but at the very least, it's a neat mindset to slip into IMO.