Great point. I've been battling this in my head but definitely not an immediate goal to encrypt. However, I personally want to make sure I do not have access to your data. As I start to work on providing functionality around syncing across devices I'll be keeping this in mind.
I've lost far more data to password or key loss or bugs in an encryption software than I've had someone try to our succeed to access/steal/...
So encryption for something that is on your local machine from my perspective wouldn't need to be a priority.