Kleptomaniac

Below are submissions from people regarding some of the benefits they experienced as a result of this perceived challenge:

They were a kleptomaniac

It taught me not to be so quick to accuse as the person I thought it was it wasn't 

I realized that people do all sorts of things for different reasons

I stood up to them and demanded that they return the items which they did. It taught me how to deal with confrontation

It made me more careful with my belongings

It helped me not to be so naive

I was supported by my friend

My friend helped me to figure out who had taken my stuff

They were caught and it taught them to wake up and be more responsible

They were caught and publically punished and it helped all of us to use their story to educate our kids as to the repercussions of their actions