Perdition writes:
To me, a heathen incorporates visions of primitive people sacrificing virgins and dancing in the moonlight holding hearts over their heads.
To me, "heathen" connotes an adherent of the
wrong religion rather than an adherent of no religion.
"Atheist" is defined in terms of what one is
not instead of what one is. I prefer to think of myself as a realist or a rationalist regardless of whether I'm religious or not.