I do and I was somewhat charitable as regards brain function. What I can't give any leeway to is misuse of words.
Sexual desire is not comparable to religious awe or zeal. The latter is simply not "lust".
The procreative drive does originate in the most primitive, oldest part of the brain, and when filtered through the later-evolved upper regions of the human brain, can turn into some very imaginative compulsions and obsessions. At the point of obsessive repetition, the attempts to satisfy an unconventional sexual desire, it can come to resemble the rituals of religious zeal. You may be tempted by this superficial similarity to use the word broadly - but the wider you spread a word, the less meaning it has. Having diluted it, you can no longer apply literally.
By the time this point of convergent behaviour is reached, you're a long, long way up the brain-structure from reptiles.
You can trace basic survival impulses all the way back to protozoa and brainless plant-life; can trace sexual impulses back as far as insects and fish, and structured social interaction back to birds and ancient mammals, which strongly suggests that new impulses arise with newly-evolved capabilities, in higher levels of the developing brain. There is no hint of anything like superstitious awe prior to humans - and it comes fairly late in human social evolution.
I think it's unsound to attribute the expression of a late-invented desire to some much earlier drive, in the absence of any previous forms or manifestations of that same impulse. At the very least, it's an imaginative stretch.
Exactly!The impulses of the various primal drives operate independently.
One hopes - though this doesn't always happen with aggression or hunger or sexual drive.When these impulses are triggered originally at the basement they are further filtered by the limbic [emotions, etc] and then the higher cortical cortex [reason, rationality, impulse controls, etc.].
And when they arise on the first or second floor or in the attic, they're still filtered before turning into action.
And that's where you find the commonality you observe - in their refined expression.