Their law is wrong because women don't have any rights at all.
In Marocco, for instanse, if a man rapes a woman, he will not get punished if he agrees to marry the woman. Is the woman being asked whether she would like to marry her rapist or not? Don't count on it.
Have you ever seen the movie ''Not without my Daugther'' ? Or maybe you've read the book? It's a true story about a woman who marries a muslim from Iraq, and he convinces her to come to Iraq and meet his family. She agrees to go, and they take their daughter with them. As it turns out, her husband never intended to return to America. She tries to escape, but it is almost impossible, since she is carefully watched by everyone in her husbands family. She tries to book a flight back to America with her daughter, but when she gets to the airport they will only let her travel, but she won't get to take her child with her - because in islamic countries, men have full custody of their children, women can't go anywhere with their children
The laws in islamic countries are extremely discriminating towards women, since they have absolutely no rights at all. and other minorities, like homosexual. A homosexual will be stoned to death in many countries, if his secret comes out.
There are also laws that are pretty stupid - for example in Saudi Arabia, if a man kills another man, the brother of the man who was killed can legally go and kill his brother's killer.