what could a thief of hope ? what does it mean to take hope ... actually that sounds awful, how can stealing hope be a good thing ?

Stealing Hope doesn’t have to be a bad thing if you’re Stealing the Hope from someone who is evil. Alternatively, you can think of it as tearing down a fictitious system that’s keeping people suffering- Falsehood to uphold a stable status quo is also tied to Hope, and so is distractions and daydreaming to abstract yourself from the grim reality. While good in little doses and certain situations, ignoring the more serious aspects of things or being trapped by Society’s Lies are something a Thief of Hope could get rid of.

Also the more Hope you steal, the more Hopeful you get! So that’d feel good I’d hope.