I don’t really have a problem with atheists in real life. Some of the atheists here, though, are just as bad as fundamentalist Christians, to the extent that they claim to know the “truth” and have an answer for everything. But like I said… in real life, not a problem.
And Arcane makes an excellent point – an atheist would be hard-pressed to show that my “deities” don’t exist, seeing as how I worship Nature. You can deny the sentience of Mother Nature, but you can’t deny the existence of the four (alchemical) elements of which She is made.