Getting Curiosity was a no-brainer for me.

It is what *cough* Windows search has always wanted to be: The all-in-one search tool - for every single piece of information you have.

And on top of that: It's fast. Really fast.
I had indexed all my files in Windows 10 explorer. - It's laughable the performance it delivers.

Curiosity is the opposite: It gives me search results as fast as I can type.

Whether it's calendar events or files: I can find everything in an instant.
I'll keep folders for now, but I think finally having a - working - flat folder structure is within reach for me now.

And when it comes to privacy:
a) You host the indexes on your local machine. - So, as long as you know how to protect that well, you're good.
b) It's a Germany-based company. That means they need to adhere to strong data processing regulations. So, I trust them to actually have good GDPR compliance.

Some room for improvement (however nothing serious, as far as I can see):
- More integrations (Trello is coming, hoping for more apps from the Microsoft 365 Business infrastructure)
- Multi-select and batch processing options would be a powerful addition for me.