Why? Thats for being there as a very solid option for blogging.
Its a pleasure to use Wordpress for such along time. In fact its the reason I started into blogging. I have a Wordpress hosted blog till now too. This blog was using Wordpress as its blogging engine from 2010 and thats a beautiful engine, I must say.
The reason I moved this to Wintersmith is, I want to focus on javascript environment now, the same reason was there, with Wordpress. I was focusing on PHP and MySql, those days. So its not that Wordpress is bad but seriously speaking Wordpress is now far beyound a blogging platform.