People that are religious purely because of "its" own sake are very genuine and extremely kind people. Other genuine human beings like Richard Dawkins who is an atheist is a humanist so his humanity boils from within and not according to the will God and his supernatural powers. The philosopher Immanuel Kant had his categorical imperative which in ethics is one the most complex ethical systems there is, is a different story. He thought doing the right thing was merely a duty done not out of happiness but as a job, thus mandatory. Christianity has the same belief but it doesn't make Kant a Christian nor Christians Kantians. Some very old school religious people possess the same belief as Stefan mentioned. They actually fear God. And in Christianity fearing God is a very good thing.
William James made a very good point which was that religion is purely optional and obviously very personal. Religion gives one limits. Although some of these limitations are very close-minded and were applicable in the time frame they were made. Religion has to evolve with time because if it doesn't then it is not true religion. It's deceitful and wrong. There are some rights and wrongs which are highly debatable and some things that are just inhuman and merely wrong.