As a paying user for years, I've had Evernote lose data many times -- sometimes important, irreplaceable data that I hadn't yet had time to back up elsewhere.
Evernote is some of the very worst software that has ever survived more than a few months on my computer without being deleted. Horrible show-stopping crash/data loss bugs are the norm, and have been increasing steadily as they add feature after feature with apparently no quality control at all.
Fundamentally, the job Evernote does (for me, but I assume also for most users with thousands of notes) is too important to delegate to a halfassed vc-backed startup that flies its engineers economy and has never heard of an integration test.
But replacing it isn't yet possible. It syncs across all platforms I use, does OCR of everything in both Japanese and English, including handwriting and text in photos, works out of the box with all my paper document scanners... There's just nothing else on the market (or if there is, PLEASE TELL ME!!) that does all that.
So Evernote hasn't lost me as a customer, yet. They've seemingly made a spectacular effort to do so, but... Life without Evernote would still be, on balance, more painful than with it.
But life with it is indeed pretty fucking painful, too.