If you store data in a format that's not future proof, using software that's not open source, then you don't really get to complain when your data disappears. Especially if you're not storing the files locally and making regular backups.
FWIW, on OSX Evernote stores everything locally in a future-proof format.
They use a directory tree, with one directory per note. Each note has HTML file, all supporting files, an "enml" version of the HTML file (i.e. a HTML-like XML document), and XML documents containing character recognition data.
The local indexes are in lucene format. (Specifically clucene.)
You will also find a sqlite3 database with additional metadata.
If you store anything you care about in Evernote, I'd highly recommend backing this up. On OSX it will be in within one of these two directories, depending on which version you're running:
Unfortunately, you're not paying enough for your complaints to matter. Evernote has made it fairly clear that they believe the software is adequate at this point and have been seeking growth through partnerships with other 'organizational' tools such as scanners (with a neutered version of the lovely ScanSnap) and post-it notes with magic colors.
I have this weird spread between org-mode and Evernote, mainly because Evernote is usable on my phone.
Because it's a typical useless comment from someone who doesn't use the service. It doesn't really contribute to the conversation around Evernote. It simply says "if you're not doing what I'm doing then don't complain about what you picked"
