One aspect of Muslim culture that runs against the grain of Americans is the lack of the acceptance of separation of church and state. Some (many?) Muslim sects, like the Taliban wish to institute a muslimocracy in which the religious leaders, i.e. imams and such, are also the state. Under Sharia law, it seems that religious texts determine justice in any kind of human disputes, with little regard to circumstances, and with broad interpretation by those who claim to be learned with respect to Koranic law; oh, and with rather crude sentences like stoning.
This kind of society is quite different from one in which there is a civil code that can be invoked without bringing God into the equation explicitly. Certainly, some of the components of Western civil law have roots in parts of the bible, such as the ten commandments. But civil, i.e. governmental and commercial, interests pushed religion from the leading role in Western society and culture to a mostly minor footnote over the last several centuries. ...