Absolutely under God is consistent with the Pledge of Allegiance! It has to do with values that this country was built on. Once upon a time, upholding God was a large part of our value system right along with liberty. Of course everyone is free to believe in what they want, that's the beauty of this country. So, with that said, why would we take under God out of the Pledge, when there are still many people who feel that way. It's funny how people always want things changed to suit their beliefs and they have no problem trampling on others beliefs. I don't believe that changing things that helped to build this country will make it better.
I have zero problem with "under God" being in the pledge of allegiance. America doesn't need to make concessions for Atheists. "God" can be abstracted to mean Jehovah, Allah, Ahura Mazda, The Atman, etc. Etc. God is a word emblematic of the human race's common cause of decency and hope. The acknowledgement by the state that there is something more important than the state. Why would anyone want to remove that affirmation? To avoid offending atheists? Why would they be offended? God is a vital part of America's culture. Can't they live with this minor irksome comment? Can't they see through the literal wording into the implied meaning? Why try to grey up something colorful?
Having the phrase "Under God" in the Pledge of Allegiance explicitly states that the people of the US recognize a God - something that is neither true nor has to be true. The phrase has its origins in differentiating the US from the (state-atheist) USSR and is an historical vestige of a passed era. With that said, while the phrase is inconsistent, the long tradition and relative harmlessness of its recitation ultimately makes removing it more burdensome and inconvenient than not doing so.