Writing notes with a pencil. I think they make this pretty clear. Anything outside of that is either a bonus or out of scope for the device.

> It doesn't have end-to-end encryption so I wouldn't use it for anything important

Don't use the cloud sync and instead manually sync things between your own hardware, encrypt at rest if you feel like it.

> e-ink is great in bright environments [...] And who is going to use their ReMarkable at the beach?

Living in a country with lots of sunlight and as a person who sometimes visits the beach, this is exactly what I want.

One of the main variables I look at when I buy laptops is "How well can I read from the display when I'm in sunlight?", I'm sure I cannot be the only one who likes to sit outside with my computer, or have windows that let in sunlight.