What's the purpose here, will you host it and access it from a browser? Or do you only want to backup its data to your server?

I have been online for a long time and seen countless services come and go, often my data goes with them.

So that was my reason for a long time, having my data available and not relying on some third party.

Now, with the emergence of Big Data + AI I've also become a lot more privacy aware. Before I couldn't even imagine why anyone would want to target my data (data mining takes a lot of work to be useful), but now/soon they can just point AI at data dumps and ask it something like "give me a list of X people to exploit, order it by method, chance of success etc etc"

Paranoia? Yes, but suddenly it feels reasonable to be paranoid.