If you have the awareness level of a snail, and your thinking is mired in shame and guilt (with perhaps a twist of drug abuse or suicidal thinking), then subscribing to a religion can help you climb to a higher level of awareness. Your mindset, however, still remains incredibly dysfunctional; you’ve merely swapped one form of erroneous thinking for another.
For reasonably intelligent people who aren’t suffering from major issues with low self-esteem, religion is ridiculously consciousness-lowering. While some religious beliefs can be empowering, on the whole the decision to formally participate in a religion will merely burden your mind with a hefty load of false notions.
When you subscribe to a religion, you substitute nebulous group-think for focused, independent thought. Instead of learning to discern truth on your own, you’re told what to believe. This doesn’t accelerate your spiritual growth; on the contrary it puts the brakes on your continued conscious development. Religion is the off-switch of the human mind.
Leave the mythology behind, and learn to think for yourself. Your intellect is a better instrument of spiritual growth than any religious teachings.
2. Loss of spiritual depth perception.
One of the worst mistakes you can make in life is to attach your identity to any particular religion or philosophy, such as by saying “I am a Christian”. This forces your mind into a fixed perspective, robbing you of spiritual depth perception and savagely curtailing your ability to perceive reality accurately. If that sounds like a good idea to you, you’ll probably want to gouge out one of your eyeballs too. Surely you’ll be better off with a single, fixed perspective instead of having to consider two separate image streams… unless of course you’ve become attached to stereo vision.
Religious “truths” are inherently rooted in a fixed perspective, but real truth is perspective-independent. When you substitute religious teachings for truth, you mistake shadows for light sources. Consequently, you doom yourself to stumble around in the dark, utterly confused. Clarity remains forever elusive, and the best answer you get is that life is one giant mystery. Religious mysteries, however, arise not from what is truly unknowable; they arise from the limitations of trying to understand reality from a fixed frame of reference.
A more intelligent approach is to consider reality through a variety of different perspectives without trying to force your perceptions into an artificial religious framework.