Religion is based on the uncritical acceptance of dogma. This thought process tends to attract a certain demographics.
However, I agree that being religious does not necessarily mean close minded. The open minded religious people I know appear accept the same premise that I do, that we cannot prove or disprove the existence of "God", so we make a more or less arbitrary choice. They chose to follow. I chose not to. But we accept the others choice for what it is.