Void -- I agree with you, and know and am friends with the kind of atheists that you describe. The subject though, being morals, supposes that Judeo-Christian morals in particular should be cast off in favor of "the light of humanistic morality". (this can be clearly seen in the article posted by Nvr) This "light of humanistic morality" has been tried, and it went down as a total failure, the French Revolution.
The successes, which produce social order that makes prosperity possible for the greatest number of people, have been the gov'ts founded on Judeo-Christian principles of morality.
John Adams was responding to a popular book of his time that touted the "light of humanistic morality".