Removing 'bad' feelings would entail scraping out a decent-sized chunk of what it is to be a human.
So, if I were to never become depressed again, I'm no longer a human? That doesn't make any sense to me.
Bear in mind, I'm not proposing Superhappy-ness. I'm simply saying that after the initial moment of pain or sorrow or frustration or grief or embarrassment or whatever, the utility of that feeling being continued drops off dramatically. And if something bothers you emotionally for, say, an hour (let alone frequently) the odds are good that you are wasting your time. (And yes, that does mean I've been doing a bit of time-wasting here recently.)
Unless I'm misunderstanding 'utility' as you're using it here, it seems like you're begging the question. To say that "bad feelings don't serve utility" doesn't really seem to be saying much at all; this is part of why I felt the need to put scare quotes around 'bad' above - bad feelings are by definition bad.
It seems that LessWrong has a nascent political problem brewing. Firstly, let me re-iterate why politics is bad for our rationality:
Politics is especially bad for the community if people begin to form political factions within the community. Specifically, if LessWrong starts to polarize along a "feminist/masculinist" fault-line, then every subsequent debate will become a proxy war for the crusade between the masculinist jerks and the femenazis.
Alicorn has contributed in several ways to the emerging politicization of LessWrong. She has started name-calling against the other side ("Jerkitude" "disincentivize being piggish"), started to attempt to form a political band of feminist allies ("So can I get some help? Some lovely people have thrown in their support,"), implicitly asked these new allies to downvote anyone who disagrees with her position ("There is still conspicuous karmic support for some comments that perpetuate the problems"), and asks her faction to begin enforcing her ideas, specifically by criticising, ostracizing or downvoting anyone who engages in a perfectly standard use of langage and thought: modeling the generic human female as a mechanical system and using that model to make predictions about reality. She has billed this effort as a moral crusade ("unethical"). I am sure she isn't doing this on purpose: like all humans, her brain is hard-wired to see any argument as a moral crusade where she is objectively right, and to seek allies within the tribe to move against and oppress the enemy. [notice how I objectified her there, leaving behind the language of a unified self or person in favour of a collection of mechanical motivations and processes whose dynamics are partially determined by evolutionary pressures, and what a useful exercise this can be for making sense of reality]
We should expend extreme effort to nip this problem in the bud. As part of this effort, I will delete my account and re-register under a different username. I would recommend that Alicorn do the same. I would also recommend that anyone who feels that they have played a particularly large part in the debate on either side do the same, for example PJeby. That way, when we talk to each other next in a comment thread, we won't be treating the interaction as a proxy war in the great feminist/masculinist crusade, because we will be anonymous again.
I would also implore everyone to just not bring this issue up again. If someone uses language in a way that mildly annoys you (hint: they probably didn't do this on purpose), rather than precipitating a major community feud over it, just ignore it. The epistemic rationality of LessWrong is worth more than the gender ratio we have. A 95% male community that manages to overcome a whole host of problems in instrumental and epistemic rationality is worth more to the world than a 80% male community that is crippled by a blood-feud between a feminist faction and a masculinist faction.