Lots of very technical people are very religious. I'm not sure why, but it is very common. Doctors are the most prominent one, most doctors are very religious. You can ask, how can someone see the inner workings of the body, understand evolution, all the scientific rigor that goes into understanding that and still believe some guy was born of a virgin and died and was resurrected? I don't get it either, but they know why, and it's their life, and accepting that humans do this and leaving them alone, respecting their autonomy, not picking on people about their religious beliefs is how I think we should behave. There's merit in the conduct a lot of it brings out of people if nothing else.
We all have faith in something. We are all members of some type of cult, with or without the negative connotations that come with that word, most of us that would classify ourselves as atheist would never admit that many of our beliefs are faith, that we go with the flow of social expectations, that we are probably wrong about most of what we believe, it's as real to us as anything, and we would do well to look at ourselves rather than heckle people we don't understand.