Chrisgel, I wouldn't call atheists arrogant or smug, even though both attributes can sometimes be seen as positive characeteristics and ...some of my best friends are smug arrogant atheists and I love'em. Do atheists have meaningless lives? Clearly not, since our learned friends have obviously spent considerable time absorbing, learning, deliberating and sermonising on religion and its sacred texts and letting us know that they have spent vast amounts of time doing so.
But there seems to be a lack of clear atheist position on R&S. The one I see presented is more anti-theist or anti-religion, a sort of 'what do you want?' "I don't know, but I don't want that and neither should you" approach, under the matriarchal leadership wherein the rest follow along in ovis aries compliance.
I am not part of the atheist flock, but I'm sure you'll allow me one go at the obligatory ;o)