Spirituality and religion provide many things that people often find comforting, including (but not limited to): preset morals, lessened fears of death, personal explanations for the unexplainable, understanding and connection of/to cosmic energies, etc...
Personally, I don't think religious paths could completely fit under the definition of "hypothesis". Ironically, the notion that we all come from the same origin could be considered more of a defined hypthosis than even the most anecdotal spiritual experience, as until we can invent time machines, we have no way of going back in time to our primal birth and test out the hypthosis of origins, no matter how logical or acceptable those hypthosis might sound or mathmatically make sense.
Likewise, no matter how silly or bizarre a spiritual or unexplanable experience might sound, it's often true that the same experiences are experienced by hundreds and millions of people (depending on the experience), and can often be repeated with expected results, even if those results are not measurable or recordable by our infantile technology (which is only barely starting to catch up with what ancient spiritual paths have known for millennia).
So, while others might disagree, I feel that, no, spiritual paths and religions are not "hypothetical", regardless of how many might have been purposely created with ficticious intentions for political or personal gain.