To me, religion is man made rules. These may help one get closer to God, therefore, I am religious in the sense that I partake in rituals such as church and other things, but I don't think of myself as religious, because Jesus was more against religion than he was for it. He was mad at the pharisees for following manmade rules and forgetting a relationship with God. Most of you are defining spirituality as beleiving in the existence of the supernatural but not following a greater system of beliefs about it, and religion is anything that is a larger system of beleifs. According to those definitions, I am relgious. But they way I define religion, I am spiritual more than religious. I see Catholics as very religious but not very spiritual (in general) and I don't think thats how christianity is meant at all.
Also, in a certain sense, I don't beleive Christianity is a religion. I see "a religion" as meaning a set of beliefs on how to act and best live your life, under a higher power such as God. Certainly this is part of Christianity, but Christ didn't claim to be just one way that works good, he claimed to be absolute truth. If something IS absolutely true, encompassing all reality, I don't think you could just call it a religion, it is reality.
Of course that is from a perspective of a beleiver, Muslims would say the same about their religion, and I won't know the answer for sure until I die. But Christianity is extremely rare in its exclusive claim on truth. No other religion before it or before the Jews made such a claim. Some such as Islam or Mormonism do now, but they are borrowing from judeochristianity. That Judeochristianity was the first ever to make such a radical claim not to be a religion but to be simply truth says to me that it is something special. Also, it was the first monotheistic religion (that we know of) with exception of zoroastrianism.
Seems like a lot of people with AS like the logic of a scientific world view, but interestingly, my own logical and scientific views have to me supported christianity. I get major doubts and I think God is getting defeated, then suddenly BAM the answer comes, and God answers more than scientism could. The more this happens, the more I am amazed and incredulous that it just keeps on answering these things, things that I have gotten scared of losing my faith over.