Some religious folks have suggested that all evil is beneficial.
All evil that we experience carries some benefit for us, they say.
However, with that idea, we reach a bit of a weird situation.
Lets say you have a rape victim. Can you seriously argue that being raped was beneficial for her?
Because then you would basically be arguing that the rapist was actually helping her, acting in her interest and in God's interest.
How can you condemn a rapist while claiming that rape is beneficial?
Now, some folks like to throw around "free will". However, that contradicts with God's omniscience.
If God knew that certain person will commit rape, why would God create such a person? Its God's action of creating a rapist that made the rape happen, which makes God guilty.
So God wasnt simply "letting it happen". He was helping to make it happen. Its like me opening a cage with wild bear in it, and then when bear attacks people, responsibility would be mine.