TH, I have never been a Muslim, nor have I studied the Koran, or done extensive research on the historical validity of Islam. I am giving my attentions to Christianity because I considered myself a regular Christian until I started having specific doubts about a year ago, and even now I have not reached a conclusion to cease calling myself a Christian. If I changed my affiliation every time I reviewed my beliefs on something, I would be all over the map. I do not think it is unreasonable or disingenuous to call myself "Christian (Other)" as opposed to some other religion, which would be less accurate IMO.