Explain the problem as you see it
My life (personal & profesional is here) and I need to have a backup of my information.
Why is this a problem for you?
In case of need, to be able to have my information in my local, and If one day for any reason, Tana doesn't exist, to make easy to recover my information in different formats to use it elsewhere.
Suggest a solution
To have options to export in different formats (JSON, markdown, Plain text, OPML...)