Why would a guy do this?

A guy who's a complete lowlife decided to email the husband of a woman with whom he's been recently screwing. (Obviously, this moron has a death wish to do this!)

In the email, this poor example of a man explicitly detailed how he engaged in various intimate acts with his wife. Many of those acts were things that she refused to do with her husband. However, the most horrific revelation was the fact that he "bragged" about convincing her to abort her unborn child with her husband.

Why would someone do this? Has our society stooped to such a low level ?

Your opinions?