My most significant issue with the Judeo-Christian-Islamic perspective on the state of the individual as intrinsically containing some seed of sin is that this scarcely meets with my experiences with real people of whatever religio-philosophical persuasion. Indeed, I must contend that in my extensive wanderings 'round this land and some in others people far and away display the far stronger and more true seed is Atman, good Self, expression of brahman in each being from inception (if sometimes stifled by disharmonic factors in many), not requiring an invitation and a bath to attend, and is extant from the start.
My intrinsic understanding of the nature of separation and union is that 'tis a natural and healthy flow looks rather not unlike the Big Bang Theory, expansions and contractions of the Universe in a cycle earlier understood by tantric teachings as Siva-Shakti in loveplay, Divine nata (dance) best described. Ancient tantra teaches Siva-Shakti/Parvati/Kali as not-separate, as like bindu ("dot") from which all proceeds to make up Time-Space, which is these Divine Two who are not-two. Indeed these concepts come upon by contemplation, meditation and illumination are Self-same notions as certain theories of modern quantum physics.
Indeed these cycles of expansion away and return to this Eternal Love that is not-not all of us and all that is, these cycles of forgetting and remembering that we are already--to whatever degree of realization--'One with God' at the level of True Self, Atman . . . these cycles are intrinsically good, and playful so long as not mean. Seems still ill-tuned vibrations prove sometimes resulting from the uneven flow of sound and other sense vibrations issue from primal AUM (from whence, a bit forgetful of original pronunciation, cometh the Judeo-Christian Amen and somewhat more precisely pronounced Amin of Islamic tradition). Sounds bouncing round that sometimes make a chalkboard scraping sound. These less than ideal and sometimes abhorrent byproducts are also like the terrible poison produced when the ocean was churned by an alliance of devas and asuras to bring forth the nectar of immortality, and also beautiful apsaras (divine flying nymphs, magical maritime maidens). This poison was then drank down by the Destroyer to save the earth from otherwise immanent demise (though ever-devoted Parvati helped too, as She caused the brew to stick in Her Fella's throat, as She feared for the effect of the dark drink).
With appropriate perspective, though, the dance through these disharmonies is indeed what yoga (root of the English word, "yoke") does to tune the song of the Great Musical, to alter the pitch and tone to create a pure vibration resounding, and to create a harmonious flow to the show. Breath-in, breath-out; expansion and contraction. Yoga, yo! When let to go naturally (as truly natural, brahman, always manifests as pure), though seeming separate, there is no sin.