I've been using Evernote for 6 years, and still continue to use it for the following reasons:

* Everyday I use https://marxi.co to write my technical work journals in Markdown (with nice extensions like flowcharts) that gets rendered into rich text format within Evernote

* I archive and tag each article I read with the Evernote Web Clipper, because URLs always go stale so you want your own copy.

* Evernote works with https://ifttt.com so it integrates seamlessly with my other applications and workflows

* Evernote is also capable of OCR within PDFs if you use the paid pro version.

* This means that all sorts of note taking is in a single place, making it a breeze to quickly search.

I pay for Evernote to get around the device limit, offline usage etc, as the free version is pretty crippled. I know there are definitely cheaper alternatives in terms of price, but I feel it's worth it for all the features available because I value my precious time, which I don't want to consume more of to maintain the same set of features using FOSS alternatives. Good thing is that Evernote allows export to a human readable archive format which I use to ensure that I have a personal copy of the notes to prevent vendor lock-in.

EDIT: Just formatting