Nothing says DIVISIBLE like UNDER GOD. The irrational fear of communists in the 1950s is the single reason this phrase was added to the Pledge of Allegiance.
Not everyone believes in a God, in the name God, or in anything at all in some cases. There is no need to force the believe of a God on such people like this. If you wanna have anything, have it be under the spirit, as that is much more all encompassing of all beliefs, than simply God is. Just because something may have been tradition for thousands of years, doesn't mean it shouldn't be updated to reflect the times. We've outgrown the need for mainstream organized religion, it's time to let it go.
The phrase "under God", being placed in our Pledge of Allegience during the Cold War, is a relic of the past. No longer do we need to use this unprecedented attempt at identifying communist spies- it is outdated. Instead, we should modify our own opinions and understand that although God does not need to be mentioned in the Pledge of Allegience, it only needs to be understood in the heart of the speaker.
No - the phrase should not be removed since now, more than 200 years after the pledge was created, we say it more as tradition than for the original intended purpose. I think it also helps remind people that the majority of the US practice Christianity, and I am very proud of that fact.