You don't need to identify with either of them. But you would be better off being on good terms with one or both of them.
Your mom seems to me to have your best interests in mind, and if you ask me, she's at least partially right. Even if she were not, reconciling and interacting with her as family members works better than the opposite, even if it's a matter of agreeing to disagree.
I'm sure there's room for more than one interest in life, and you probably would benefit from broadening your horizons somewhat. That's true for all of us.
On the religious impasse, take it for what it is. You two hold different views.
That doesn't mean the two of you have to argue it out. If she starts, you can offset the errors on her part (such as that easy believeism stuff) without arguing or lecturing, and then say that you appreciate her POV (without agreeing to it), that she has a point, and let it go at that.
For your part, don't bother bringing up the subject of religion. My own mother was of another faith and because I didn't go to the mat over doctrinal differences at every opportunity, she gradually became happy enough just to know that I was a Christian of some sort and cared about such things.
Stop trying. You know by now that it won't get you anywhere.
But I do not actually know your mother, so my advice concerns somebody I'm sizing up from reading a few lines in a post. Everything that I'm suggesting might NOT work, but I do think bending over backwards for the sake of harmony, neutralizing the areas of disagreement by sidestepping them, could lead to a better situation, and it's one that millions of other people have found to be workable and almost pleasant. Think of her as hopeless if you want, but don't relate to her that way. See what happens.
