> There's not much argument to be had.
Yes, there's no argument because you're incapable of coming up with an argument because you don't have anything to base it on. You're just responding emotionally and trying to slander them because you know that they made a good point and you hate that.
> You've created a logical justification for a myopic, misanthropic world view.
It is neither. It is a quite reasonable worldview that the vast majority of the population subscribes to and finds rather acceptable.
> Many find reciprocation important in a relationship.
This is a non-answer, because you know that the answer is "no", but you can't bear to say it because that would be admitting that your position is inconsistent, yet you can't assert that the answer is "yes" because that's obviously insane.
Thank you for so eloquently refuting all of your own arguments.