But all the above are examples of 'faith'. If one 'believes' without any experiential data then it becomes a matter of 'faith' which is the belief in something without any perceivable data except those ones mind has accepted without proof (yes this can include the idea that there is no god). I don't have to 'believe' in a cell phone, I have one, I know what they are for and who made it, I can go to the factory where they are manufactured and even ask someone about the man-made technology that created it etc. Through the use of a cell phone I understand its function but it isn't worshipped because I know that a show of worship will not bring on badly needed rain, take the pain out of my heart, promise me an afterlife or cure disease. Faith is an acceptance without knowledge.
I do agree that one doesn't necessarily need a religion to believe in god but one does need faith unless of course that person is lucky enough to experience god in some way or fashion, even if it be by watching the process of all nature of which we are apart, but then to do that means to accept 'god' or the process as is without trying to adapt it to a morality or some wishful thinking about what its supposed to mean or adding to what we don't know, for example having a specific idea of what happens after death whithout knowledge of death.