This is already a busy topic, and this is as good of a chance as I'll have to get something off my chest, so here goes...
There's an obsession verging on dogma in much of the hacker world that rationality is the only path to correct action; that by virtue of being hackers we are all somehow divested of otherwise human frailties like emotion, love, and irrational behaviour. As one of the commenters on this thread so wonderfully said:
> No, you're not some amazing savant that has popped up out of the mass of mediocrity that is humanity.
We are, every single one of us, a fallible creature full of fault, vanity, and ego. To argue that I am under the 'influence of cognitive dissonance' because I am falling prey to one of life's most unstoppable impulses is perhaps the strongest example I've yet seen of the absurdity of rational behaviour as the highest truth.
There is a time to be rational and to appeal to such sensibilities, and as hackers we live in those times more than most people. Crafting, debugging, and similar work pleads for rationality; indeed it is a necessary ingredient for much of the work a hacker does. But its applicability has definite limits, and as with any tool it's critical to know where those limits lie.
The core act of deceit comes when, drunk on the power and clarity of thought that rationality brings, the hacker mind tries to apply this tool to matters of the heart or soul. To pretend that the behaviour of a parent towards their child has its basis in rational thought is to presume rationality is a more human trait than love, or than the desire to express one's will on the world.
When parents say things like 'I love my kid so much that it makes my heart hurt', they aren't being flowery; that's actually what it feels like. A feeling so grounded in the core of our existence as a species that it's inseparable from physical pain; to try and apply rationality to that is the height of naivety. Likewise, when people say things like 'you can't understand unless you've had a child yourself', they aren't being dismissive. Parenthood isn't just another mouth to feed or diapers to change. It is a rewiring of your mind and your soul so complete and severe that it can turn love into physical pain. It is perhaps the most human event that has ever occurred in my life, and I suspect most other parents would say the same.
I have weeped openly for days in both happiness and fear for my daughter's well being. I have walked away from a life that took me a decade to build in order to ensure her health, and I never once questioned the correctness of that decision. Many of my decisions as a parent have been made in the face of rationality, made on a balance of many factors of which the rational course of action was just one. Walking that razor edge between the rational way and the biological imperative is an essential skill of any parent. It is a path impossible to describe yet clear as day if you just know where to look.
The only objective truth is that there are no objective truths. I won't pretend to say that my perspective is any more or less correct than anyone else's, but I will say this: rationality is a double edged sword. It is a potent weapon against bugs, suits, and dogma, but it is also capable of separating you from that which makes you human. Like any tool, it's up to you to decide how to wield rationality. Please just know the consequences before you start swinging it.