Wrong analysis.
Instead of having limited correlation to the real world, they are common denominators in the real world.
Dopamine is a denominator of what, exactly?
Before you speculate on the apparent differences, look at what everything has in common and how this commonality is able to express itself in nearly unlimited ways.
https://www.ncbi.nlm.nih.gov/pubmed/19699181
If there is something in the link you wish to draw my attention to, it is not apoarent.
If dopamine is associated with "improved affinity" toward another person,
This is an instance where you are dumbing it down. High levels of dopamine are also associated with anti-social behaviour, psychotic episodes and a host of other mental maladies. IOW your premise of "dopamine=yay!" is incorrect.
then why should the single celled organism which also possesses dopamine in it's sensory system not be able to "experience" a feeling of symmetry and comfort? The rest is just a Darwinian evolutionary process of becoming more complex.
Because dopamine doesn't universally correllate to feelings of symmetry, etc.
And even if it did (which it doesn't ) correlation does not equal causation.
But oddly it still takes the same amount of anesthesia to put a mouse to sleep, i.e. render unconscious of feelings (de-activate dopamine reaction), without affecting other internal automotor responses as it does a human.
So, all organisms which posses a large number of dopamine in their system (regardless where they exists) will exhibit the same chemical reactions and are subject to anesthesia. Ever heard of a "local"? It de-activates the dopamine signaling system locally. That's why you do not "feel" anything.
So how do you propose to take this information and not fall down any of the type I or II errors laid out before you?
https://en.m.wikipedia.org/wiki/Type_I_and_type_II_errors
https://www.dnalc.org/view/2384-Dopamine-Oxytocin-Rewards-and-Bonding.html
I am channelling the "same-worldly variable dimensions" at "earlier times", and ongoing as we speak. The number 2 trillion, quadrillion, quadrillion, quadrillion chemical reactions on earth alone is trivial in your mind?
Is talking as if you can definitively count the chemical reactions on earth supposed to allay our fears you are relying on fabricated narratives or confirm them?
Define love. If your definition is different from mine, then out with it. Don't keep me in suspense.....
https://www.poetryfoundation.org/poems/45106/sonnet-116-let-me-not-to-the-marriage-of-true-minds
Let me not to the marriage of true minds
Admit impediments. Love is not love
Which alters when it alteration finds,
Or bends with the remover to remove.
O no! it is an ever-fixed mark
That looks on tempests and is never shaken;
It is the star to every wand'ring bark,
Whose worth's unknown, although his height be taken.
Love's not Time's fool, though rosy lips and cheeks
Within his bending sickle's compass come;
Love alters not with his brief hours and weeks,
But bears it out even to the edge of doom.
If this be error and upon me prov'd,
I never writ, nor no man ever lov'd.