I have a bit of a problematic/ambivalent relationship with patriotism and the flag. My son is a boy scout, and obviously that teaches great respect for the flag and to some extent patriotism, and I don't have any problem with it.
But I've long since shed any particular jingoistic patriotic inclinations. My allegiance is to my family, and my God. I would fight for the USA if it came to that, but it would be based around protecting my family and my family's future and the right to practice my religion.
It's transactional...it's the best place for me to live, that I can live. I think many of the principles that the USA was founded on and/or operates on are admirable and valid. But if those changed (and they do), or better opportunities existed, I don't think I feel a particular allegiance.
I also don't know what exactly is meant by pledging allegiance or patriotism or flag-fetishizing in general...is it to our government? Our military? Our President? An idea?
Honestly, the only one of those that's compelling is that you're honoring an idea, or the set of ideas that America is based on, even though human execution has always been wanting, right from the jump. I do find those principles and ideas extremely compelling, but I don't know what it means to pledge allegiance, or honor, or sing an anthem to an idea or set of ideas, in a practical sense.
Frankly, the dissolution of my patriotism might simply be a casualty of the end of the cold war and a true external state threat to our way of life.