Most Basic Demand Of Religion?
Yes, we should base all of our decisions on reason and rationality rather than desires, whims, emotions, etc. As you stated, reason and rationality are among the faculties that set us apart from other creatures. In that sense it’s correct to say that Islam, when understood from the correct perspective, forces us to use our faculties of reason and rationality in order to arrive at any conclusions. With that said, one must be careful in the application of reason and rationality. When applied to hypothetical or plain false ideas it may yield absolutely wrong results which may even appear very logical and coherent on the surface.