Dawkins likes to present the idea that scientists question absolutely everything but this is not entirely true. Science, unlike mathematics is built upon a set of unquestionable axioms that constitute the scientific methods.
Most notable of these is empiricism, namely the belief that you can identify all the relevant conditions to an experiment and if you change an irrelevant variable (typically time or location), you can conduct the same experiment with the same results. This presupposes a divine entity has no control over the outcome of your experiments so in a certain sense you have axiomatized away god at least in the sense of a divine entity that intervenes in the world.
Personally I'm an agnostic, I see no good evidence for their being a god. I don't believe you can discover the nature of the universe without working from basic axioms however, and you do have to believe in those axioms in order to get started. If you aren't an empiricist, and don't believe in the scientific method you will not be able to do good science.
Similarly, If you don't accept basic axioms like the value of human life and that human beings have basic inalienable rights in a theory of ethics, your theory of ethics will allow all kinds of atrocities. The common argument that religion makes where accepting certain basic ethical principles implies belief in god is as deeply erroneous. Ethics is not the sole domain of the religion even though religion has influenced the code of ethics and morality throughout history. The vast majority of agnostics and atheists are moral people, and morality is certainly not the exclusive domain of the religious.
In general I find this topic is often way too hostile to be productive.