Again, there is a wide variety of belief within the faith. Some are literalist straight down the line, others are not. A catholic, is not a Episcopalian, is not a Quaker, is not a Lutherian, is not a Coptic, etc. Take the Quakers, for example, which exhibit a pretty wide variety of believes:
http://www.quakerinfo.org/quakerism/beliefs
Also, keep in mind that religion can be used as much for resistance to oppression as it can for oppression… Think of Civil Rights, Indian independence movement, the various sects in England in the late Elizabethan/ Early Stuart monarchy, in the Middle East/North Africa, especially among Sufis, etc.
Talking to people of different faiths you realize how much they actually differ and quite a few of them do take the bible as allegorical, even if their preacher is telling them something different. Plenty are able to embrace science and technology and not throw out a belief in god.
If all you’re interested in bringing down the faith, and all that, that’s fine, I suppose - you’re just not going to get very far. If you want a more secular world, where people are free to worship privately, but the assholes who think we all need a dose of god are kept out of it, that’s probably far more likely.
But, I personally care far less about what people believe and far more about what they do. If someone’s god tells them to do good works, care for the poor, be good stewards of the earth, put their bodies on the line for positive, human-centered change, and love everyone regardless, I can work with that person. If someone’s god tells them that they need to shun the unbelievers and that they are masters of the universe, I got problems. This goes for the new atheist movement, as well. They are starting to exhibit worrying signs of dogmatic thought. That, to my mind, is the real problem. We are no where near being able to successfully chart what reality is, though we are probably closer than we’ve been before. There is nothing wrong with a little humbleness and an admission that there is still plenty we don’t know. I’m not saying in that knowledge gap lies god, just what we don’t know.
At the end of the day, we are all here together, and the more you push against people, the more they are going to resist and get more fully entrenched.