Scientistic, shallow, narrow-minded, disgusting, thoroughly negative/cynical.. It actually surprises me that so many people could lack the depth and heart that one has to lack to have such a point of view. But it's just a reflection of the scientism of our times, and I think the attraction to illusion that one fundamentally understands *everything* (through physics, neuroscience, etc.) and is *right* (as backed up by the forces of academia and moderately intelligent people everywhere) is stronger than the drive toward common sense and the preservation of the sacred within oneself. I think that to reduce love to chemical reactions in the brain, one must defile oneself and make oneself less than a whole person. If taken too closely to heart, this kind of view can diminish one's ability to feel love and communion with others and to see it in others.
The reason I said "moderately" intelligent earlier is that I heard from someone with an IQ of 180 (Steve Schuessler, former president of The Prometheus Society) that the graph of tendency to believe in spiritual concepts over IQ is biphasic; in other words, it's high for people of low to average intelligence, it's low for people of moderately high intelligence, and it's high again for people of extremely high intelligence.
One other thing I'd like to clarify is that when I say people prefer the illusion that they understand everything through physics and neuroscience, even then it's only a kind of *understanding by proxy*, because most such people don't really know much physics or neuroscience, they just get the gist of it and have faith that love and everything else reduces to it, while all the rest is considered unimportant details.
Needless to say I don't believe it's proven or provable that love is only chemical reactions in the brain. I understand that there are some reactions in the brain that tend to go hand-in-hand with the feeling of love, such as the increase in oxytocin, but I think all that shows is that there is a *reflection* in the chemistry and neoro-activity of the brain of what's going on spiritually, which makes sense because the brain appears to be the nexus between our consciousness and life in the physical realm..
There's a couple of relevant posts in my blog, https://myriachromat.wordpress.com/2018/04/13/notes-on-science-scientism-mysticism-religion-logic-physicalism-skepticism-etc/ and https://myriachromat.wordpress.com/2017/03/30/are-spirituality-and-science-in-conflict/
Thanks for asking.
added comment:
Materialistic reductionists are driven to understand everything in terms of patterns and systems, but it is ultimately vacuous and unsatisfying.