Although I often dutifully recite the Pledge of Allegiance, I do so reluctantly and hypocritically. I do it more because of social conformity than any real attachment to the flag. To me, a pledge of allegiance, to a flag or a country, is un-American. We are a country founded on dissent; we should not have a legally or socially enforced act of conformity that serves no other purpose than to make some people feel good. Those who recite the pledge should remember that "liberty and justice for all" should include those who take the liberty of not reciting the Pledge of Allegiance.
As a measure of how emotional this can get, consider the campaign smearing Barack Obama for supposedly not putting his hand over his heart during the Pledge of Allegiance. Actually, it was during the singing of "The Star Spangled Banner"; I know hardly anybody that puts his or her hand over heart during the singing of the national anthem.
To me, "The Star Spangled Banner" and the Pledge of Allegiance are more worshiping an icon than respecting the idea of a democratic republic. It became even more a public worship when "under God" was added in 1954. I find this ironic in that the Constitution states that there shall be no religious test for public office. However, if a candidate doesn't dutifully recite the whole Pledge of Allegiance, including "under God", he or she is considered unpatriotic and unsuited for public office.
What makes matters worse is that some office holders wear their flag pins, recite the Pledge of Allegiance, call unpatriotic those who do not, and then trash the Constitution. There is no requirement of a flag or a pledge of allegiance to the flag or government. There is simply the requirement that all government officials down to the state level "shall be bound by Oath or Affirmation, to support this Constitution" (Article VI). The President is required more stringently to "preserve, protect, and defend the Constitution" (Article II).
For more on the Pledge of Allegiance and dissent, search on "pledge of allegiance" and "Jehovah's witness". Among the more interesting hits, you'll find "In Defense of Obama's Patriotism, A dissent on the pledge", Ron Rosenbaum, Slate, Nov. 12, 2007.