Problem - you aren't just hurting the feelings of the terrorist, you are insulting an entire religion when you do something like that. That insults a lot more people than you really want to piss of.

Let's put it this way - using some random examples -
Instead of calling Barry Bonds a lying cheater, you call all Black people lying cheaters.

Instead of calling Britney Spears a stupid drunken whore, you call all women stupid drunken whores.

Instead of calling Cardinal Law a supporter of Pedophilia, you call all Christians supporters of pedophilia.

Sure you've pissed off the person you wanted to, but now he's not the only one who wants to kick your ass.

Honestly, I don't want to piss of a billion people just to get information out of one terrorist. That makes Al Qaeda's recruit efforts much easier - kind of like Al Qaeda's 9/11 attacks made US military recruiting easier than now.

Do you see the connection?