How?
The Legacy version is good.
Some notes I will choose to sync to the cloud. Such as math class notes, and some software uses experience. This way I can read the notes elsewhere.
I will store some notes locally, such as diaries and financial tables. I don't want to share this information, I want to make sure that only me can read these notebooks.
In the new version, I had to choose between syncing everything, or nothing. Too hard to decide.