I never installed it, because there are too many other ways to make notes. They were solving a problem that was already solved, albeit imperfectly.

I can send an email to myself. If it's a person's info, I can put them in Contacts. Or I can have a Google Doc called "Notes" where I write stuff. All of those have interfaces I already know.

One can validly object that all of those methods have drawbacks. But they've worked well enough for me that I wasn't wishing for Evernote and one more thing to learn.