whilst i personally really don't care much about the whole cheater, pursuing taken people, from a pragmatic point of view, it seems like a ballache.
have never pursued a taken women myself, nor been with one before (knowingly, either in foresight or finding out after the fact), but meh whatever. having seen quite a few marriages and relationships that appeared pretty solid fall apart over the last couple of years, i've become fairly disillusioned with the whole idea of monogamy.