Some do. The writers of the Constitution, for example.
Up to you, which lessons you choose to learn from the West.
It's a little surprising to me that the influence of religion on US political structure has not served as more of a wake-up for the Islamic East - the information necessary for analysis, recognition, etc, is broadcast world wide. But then I suppose it's like the Irish Catholic under the boots of Cromwell's Puritanism - hard to see the bad guy in the mirror, when he's stomping into the living room.