People know so many possibilities to hurt them self and others. This capabilities are as many as them self. Unfortunately on Dreamstime I found less those examples then the ones that illustrating people happiness. That is optimistic.
We suffering also with some psychical way, when we hurt us self with some bad thoughts or someone else is hurting us with words.
It also happened some accidents, some of them are happening because our inattention other by someone else.
Hurt sense is showing us how wonderful and precious are those days when everything is all right and enhance our happiness.