Sorry for not replying yet, I’m trying to tackle how best to sincerely respond to you considering that you seem to be playing devil’s advocate pretty hard rather than trying to move into the middle of a shared understanding or at least a shared and open disagreement.
Religion is different from philosophy at the fundamental level: religion is driven by ideology, philosophy is driven by truth-seeking. Religion is fundamentally closed due to prescribing required beliefs and ways of thinking that are not seriously challenged or examined, whereas philosophy is fundamentally open due to prescribing only a must basic and upright relationship between oneself and thought, or between thought and its object. Philosophy arrives at conclusions because those conclusions were objectively tested in the fires of reason and honed through collective process of examination, critique and change; religion doesn’t even arrive at conclusions, it simply asserts things based solely on an appeal to the authority of the past, appeal to fear and rewards, and thereby is essentially a pathological enterprise.
Religions arose only because of a lack of philosophy. Science is a branch of philosophy, religion is not; religion is a branch of pathology/ideology and will be eliminated eventually as science and philosophy continue to develop and replace the psychological, social and economic functions that religion formerly performed.
As for the rest, again I’m not sure how to respond from here, because I can’t tell how serious you’re being (for example, we don’t simply wander around randomly in a library of ideas, that’s a disingenuous metaphor to use). If you are being serious then I suggest looking at Fixed’s reply above. Science and scientific method are branches of philosophy and philosophic method, not the other way around.