"Its biological because a lot of stories exist about it, that's my proof"
The sad part is you don't see how illogical and retarded this argument sounds
By your logic there is some magical extremely specific "believe in God" gene that commands only a single species on the planet to believe in God, oh and there are a bunch of books, holy texts, stories about various God's, so belief in God is definitely biological BECAUSE THOSE BOOKS EXIST
It can't just be because thinking about the concept of God is just an obvious eventuality for any animal with the intelligence and consciousness of humans, and those would create cultural values that are passed down through generations, nope, belief in God has to be biological because "muh stories"
Whether something is "biological" or "constructed" is already nebulous territory because that ultimately begs the question of what exactly is meant by "biological" or "constructed,"
Taken to mean that "biological" is a result of human instinct that comes from centuries, millenia of evolution, as a result of what our own physiological responses demand of us that applies at a universal level, whereas "constructed" refers to something subject to change based on what society, cultural customs, and ideas at large demands of people,
Assuming that such things are in fact distinct from each other and do in fact exist (one can argue that everything constructed is a result of biology or that biology is subject to human change), I argue the fact that because every single human civilization in the history of world has it by it's literature, no matter the time, place, or culture, that's significant evidence that it is biological.
Although one can argue till their blue in the face that the universal immorality of "murdering your neighbor" is a social construction and not rooted in biology.
That's different from "God" because
(A) God's existence is not a result of biology or social norms, whereas "validation" clearly is.
(B) God is something clearly not universal, because each civilization in history which had a deity not only worshipped different deities altogether, but also some civilizations didn't even worship God (see Buddhist Asia).
I mean, what other evidence are you going to use? Tests to measure health, happiness, and sadness? Are you going to look at the neurological processes specifically?
"Health," "Happiness," and "Sadness" can be argued as social constructions that fluxuate from society to society as well! That doesn't answer the question of what "Health," "Happiness," and "Sadness" overall are, or whether they are "biologically a part of human nature"
And just because something is "rooted in biology" does not make it "biological" per my definition. My desire to cut off my dick and become a woman may be rooted in my own biology, with my brain size and neurological processes demanding it of me, that doesn't mean transgenderism is inherently "biological."
