If we were like the Australian redback widow spider, the Chinese mantis, or the female wolf spider ....I will not describe the behavior, but trust me, if I did you wouldn't favor it for your lot in life.  Some of you may think that's funny, but I'd guess you wouldn't think so if you were on the receiving end.    Most of us would agree it is bad, unless there is some sort of mental breakdown of conscience where nothing is consider bad.