Jacob Levy has a very good post on the Pledge of Allegiance and its contemporary meaning. I tend to agree with Levy that “[i]f the words are not serious—and they’re not, anymore—if they’re just mindless blather, then they demean something that shouldn’t be demeaned.” When something is said by rote rather than with conviction—as the Pledge is, daily, in public schools—I think it is inherently devalued.
Not that this has much to do with the constitutionality of including “under God” in the pledge, mind you, as Jacob acknowledges. And I’m not sure what exactly to make of Jacob’s suggestion of “a one-time citizenship oath sworn at age 18” as an alternative to the Pledge. But I do think that people who take God seriously ought to wonder whether His name ought to be included as a footnote of something that our society treats as nothing more than a ritual incantation.