Spirituality deals with the qualitative properties of the inner experience if it's a worthy spirituality. That takes introspective objectivity, and years of experience in relation to self, environment, and others. Analyzing qualitative reality based on inner experience is elusive, and is mainly the pursuit of spirituality.
Analyzing quantitative properties, and external behaviors with evidence, math and logic that are observable, and measurable is the strength of science. Qualitative reality is not.
There's no reason to marry science with spirituality.