Hi Burn: Not meaning to pester, but:
Pray, teach us how to do that! Subjectivities cannot be shed.
Seems a bit dogmatic. As I pointed out, two such paths to observing your own subjectivities are therapy and meditation. A skilled psychotherapist can help you to see your beliefs more clearly, help you to challenge your own preconceptions, become more an observer than merely be at the whim of your thoughts. Another mechanism for you may be Zen Buddhism. Neither path is a quick fix, but both have been helpful to people trying to shed some of the subjectiveness.
Of specific help, you might try working with a Certified Hakomi Therapist, which blends a meditative posture with therapy. Or any of a number of self-realization or self-actualization workshops. I'm not sure what will work for you, but I have known many people very well who have come to a balanced place, aware of but not at the mercy of their subjectivities.
Some of them choose to continue a belief in the divine - but are aware that this is a choice that they make because it serves them well in their lives.
Not that I'm suggesting anyone in particular needs or wants therapy. There are broadening paths available to blunt the hold that subjectivity has on us. Will it go away completely? Not in my experience - but it can be moderated.
Whichever theories confer the best advantages to their hosts propagate preferentially over those that are flawed in relation.
Since preferred theories do propogate (and they are preferred usually because they have verifiable results in the lab), I wouldn't have a problem with that. The major difference between religious memes and what you call scientific ones is that scientific ones are always open to continued testing and (sometimes with the difficulty of religious mems) are withdrawn when found wanting.
Unlike JW memes. Which hare not propogating all that well, considering that less than .1% of the human population have been successfully infected.
I need a meme inoculation...