Ben Gillbanks tells us why he didn't use WordPress to build his WordPress themes site.
I feel spending too much time in the WordPress bubble can be bad. I’m not going to grow as a developer if I don’t try new things. By working with a PHP Framework that I haven’t used before, by ditching databases, by integrating with third party services, I can learn.
WordPress — or any CMS really — will always be most useful to end-users, not developers. So Ben's learning experience outside of WordPress makes sense. It's certainly interesting to read what he learned.