Because their "religion" tells them non-Muslim women are off limits and to be enslaved as "infidels". You aren't Muslim so you are too...men are executed. What the hell do you think the motive is for terrorists?! So they get on the net and want sex with non muslim women to keep from being chastized among Muslims in their community. Ask any military who served in Iraq or Afghanistan. Sir...your ignorance shows your a victim of the "Dumbing down of America", like the rest here.
What has that got to do with his religion and btw, not every arabic speaking person is a follower of Quran. Its just a message admiring the clip. Everyone to their own. No need to be nasty and personal.