If God made man in his image, then we should be able to see traits of God even still in man although twisted with sin.
We should be able to see things that reflect God's character even in very wicked people like people who kidnap little children for sex slavery and people who torture others for their own amusement. But I always think of reaching out to the victims rather than the wicked (using victim and wicked in a very laymanish manner since technically all human beings have sin and are thus wicked). I thought this would be amusing: someone is called to be a missionary. Oh, to whom are you called? To the Wicked!
Which is true always, although I do not think about it.
So then, my coworkers whom I hope to be a witness to are wicked?
One of them confessed that he enjoyed instigating pranks. But the pranks mentioned were rather harmful. If one find pranks that hurt others amusing, then they are doing just as people who find pleasure in torturing others. It is the same thing, even though on a different scale.
I guess this must always be the case, since in Matthew, Jesus talks about how even looking at a woman with lust is committing adultery. The sin is all the same, although the magnitude is different. Like a vector. Different magnitudes but same directions.