I suspect a lot of this is selection bias: the Emacs discussion you see online is often coming from fanatics rather than people who use Emacs without blogging about it.
Exactly and that's why I want to know more from those who don't do everything in Emacs and how they decide when to use Emacs and when to use another editor and how mixing both editors in your life works out for you.
I use Emacs for editing computer programs (and version control, some documentation, etc), as a calculator, and for interacting with R via orgmode. I don’t use it for reading email, editing other documents (gdocs, wiki, jira, etc), browsing the web, or even interacting with shells (I might call sort from Emacs but I don’t use shell-mode or similar.
I suspect a lot of this is selection bias: the Emacs discussion you see online is often coming from fanatics rather than people who use Emacs without blogging about it.