I am in the same boat - I hate the new UI and had I known about this change I wouldn't have updated Evernote on my Mac. This is totally ridiculous and makes me want to find an alternative to Evernote. And I am a very, very long time Evernote power user. I just started using Bear which has a much better design and UX, I was just going to use the free version in addition to Evernote but this change is seriously hindering my productivity. Tags are much more intuitive in Bear and it supports Markdown, too, btw. Still not sure if it's a suitable substitute for Evernote, I hope the Evernote team decides to allow the old Notebook view back soon.