Earlier quoted context omitted.
I find discussions of selfishness interesting in the context of a biological imperative. Raising kids mostly feels to me like I have a horrible heroin addiction. Loads of cash and time, reduced access to jobs, increased risk of intrusion by authorities and I struggle to see any personal benefit but lots of personal losses. Nonetheless my brain has tricked me somehow into it, at some basic biological level, and it see…
This sounds like the free will argument. we're just complex receptors to stimuli, we don't choose anything, we receive inputs and react accordingly. "it's just biology" in this sense there's no discussion on why humans chooses kids or heroin, or taking a shit. The answer is "they don't" so this isn't about kids. you've made up your mind about all reality.
This is false equivalence, taking heroin isn't a biologicals imperative, reproduction is obligatory to life.
My thesis is humans have no real choice at a population level not to reproduce, your fallaciously equate that to a reductionist view on everything else including things not obligatory to life.