Half the people I know believe that religion as we have it today is sheer nonsense and that spirituality is a fanciful free-for-all — just psychological play done for the pleasure of it.
The other half thinks that religion was wisdom revealed whole but subsequently lost — an ancient treasure squandered, that we must now recover before something dire happens.
As always, I disagree with everyone.
I think religion is institutionalized spirituality, with all the advantages and disadvantages entailed by institutionalization. When I say institutionalization, I mean something more like scientific institutionalization, enabling systematic challenge, response and progress, more than what spiritual-but-not-religious haters of “institutionalized religion” mean.
Indeed, individuals dabbling unassisted in spiritual matters would be as advanced as individual physicists working in isolation starting from scratch their own theories and homemade laboratories could accomplish. Or imagine amateur physicists watching hours of Youtube videos about the history of natural philosophy and using them to launch their own programs of physics research.
I think religion and spirituality refer to realities that can be understood or misunderstood. I think these realities are not comprehensible in objective terms. They require different intellective modes that few of us engage when we “seek truth”. I think different religions are analogous to the research programs of Imre Lakatos, with their own lifecycles of birth, ascent, flourishing, decline and dying out, and their own technological innovations, meaning, literally, technique systems, a.k.a. methodologies.
The resemblances among religions are due partly from borrowings across traditions (which is how a spiritual research program is preserved) but also because the truth they pursue is the same and these traditions only thrive and endure insofar as they succeed in that pursuit.
But that truth pursued is not essentially objective. That truth includes objectivity, but transcends objectivity, subjectivity and all distinctions between object and subject.