Is not the belief in the existance of a supernatural being (God) a logical fallacy?

The belief itself is not a fallacy, but the reason for the belief often is. For example:

I believe in God because how else could everything have got here? (argument from ignorance)
I believe in God because he gave is only son for my sins. (emotional appeal)
I believe in God because the Bible clearly says he exists. (circular reasoning)

Rather than a blanket fallacy of belief, one would really need to explore the reasons.