I think yin and yang are somewhat misinterpreted by us westerners, and it is.. biased then; the light and the dark, the good and the bad, the man and the woman. In the east, they are not as tanatophobic as us, and darkness is but another side of life.
But as a unity form fine.

. The skewed symbol's lack of balance and symmetry has always nagged at me; it's surprising that the upward-pointing variant isn't more common.