I'm using org-mode profoundly since 2015 for a lot of my daily note taking routines. Additionally, I've started two years ago to work some of my readmes/tutorials with org-mode. It provides a fantastic way of helping to write, where I find it much more graceful than RST (or Markdown at all).
One of the reason of change to org-mode, however, was its excellent code blocks and noweb-like feature - as you told residing in org-babel. However, that is not what org-mode was buying for me, but the sheer extensibility and that you can use it now everywhere (e.g. for static page builder like Jekyll or wiki-pages based on Gollum).
I recommend everyone to peek at the excellent Spacemacs project, https://www.spacemacs.org, for an org-mode experience out-of-the-box.