Thanks everyone --- these are great answers!
What I detest most in people I'll call "bitterness". It's when someone accepts an unhappy existence as the new normal and resets their expectations to life being suffering. And then they want society and value systems normed to the comfort level of people whose life is pain. It's the crab bucket attitude, the dog in the manger, the desire of people who are biologically or practically never going to be happy dragging the rest of us down to their level. You see it a lot on the far left and the far right and in s**thole small towns and identity politics subcultures. I think bitterness and hating life is a poison we don't talk about because pity for the suffering clouds human judgment
If I ruled the world, there would be a hand up for people who have been pushed down for every possible reason- because their immigrants, Muslims, poor, women, gay, transgendered, autistic, or whatever. I'd forgive nazis and communists who changed their mind and would stop punishing rapists and war criminals if I thought they really had changed their policies about hurting others. Instead the worst sin would be giving up on human happiness and teaching vulnerable people like children or the poor and depressed than happiness isn't important or possible. Or squatting on suffering people as social territory so you derive power and profit from teaching people to give up on life (I think lots of "helping professional" types are really like this)
I'd promote a culture where people who have given up on life get ostracised to save resources for the living. Humans seem to need someone below them and last place aversion in human nature, so why not make the excluded class the people who can't be happy anyway? There would be PSAs and support groups helping family members and spouses cope with making the right decision of cutting off bitter broken people and not wasting their lives on them. I wouldn't hurt bitter people but there would be suicide booths like on Futurama or the room from Soylent Green publicly available with like a moderate waiting period. It's after all what I want if I ever get some disease trapping me being unhappy forever
_________________
That drip of hurt
That pint of shame
Goes away
Just play the game