system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: "Life is unfair" and "That's the way it is, just accept it" are worthless in discussions about changes in society and laws.

This is probably the go to argument for anyone who can't justify some specific law and custom despite the harm it might bring but also wants to keep it for some reason.

The argument seems to ignore that the world can improve and in fact did, mainly because of people who didn't accept the status quo. That notion seems to be literal toxic defeatism and adds nothing to the discussion.

It was also used through history to justify various institutions (or support indifference to injustice), for instance back during the early 19th century many American politicians "considered slavery immoral but thought it couldn't be changed" leading them to accept (and sometimes even profit from) the institution just like someone who didn't think once about the morality of slavery.

The idea that we should strive towards perfection, even if the final goal is too idealistic, should be our guiding principle because that way we would be able to maximize human happiness and benefit others as much as we can.

EDIT: I noticed many people used counter-examples that discuss how those phrases can be useful in our daily life, I agree with that, that's why I said "are worthless IN discussions about changes in society and laws", doesn't mean they have no uses at all.
gpt
Sometimes taking a moment to express toxic defeatism can be cathartic.  For some people, being optimistic and positive in the face of overwhelming challenges is difficult and allowing themselves some time to express that frustration is akin to blowing off steam after work.