On the original question, if Aragorn had to answer the form it would probably be "One of the Faithful".
I hate those stupid forms though.

There is no good reason you need to know my religon in the U.S. unless something has changed since the last time I read the Constitution and we are now One Nation United Under One Church and you are planning an Inquistation (sp?). Or my gender or my race or anything else. I'm a person who bought your product if I want more info from you I'll contact you.
I never know what to put on the religon question either because I don't belong to any given church. I read the Bible and I believe in God and Jesus. That's it. No Church of Christ or Catholic Church or anything.
Can you tell I've had to fill out some of these forms today?