You seem to have taken on the same attitude as the author of "Sword of the Prophet" in that it's a black-and-white situation. Because the human rights record of Islam is under question then Islam is 100% as you say "a mad human disease".
To ignore the good in Islam is as foolish as ignoring the good in Jesus' teaching, despite the Inquisition. One of the world's greatest universities was advancing human culture and science in Baghdad during the Middle Ages while so-called "Christian Civilization" was buring people at the stake on the grounds that they couldn't pick up a red hot iron bar! One of the best poets the world has ever seen is Jalaladin Al Rumi a persian and a MUSLIM!