
"The Conspiracy against the Human Race is renowned horror writer Thomas Ligotti's first work of nonfiction. Through impressively wide-ranging discussions of and reflections on literary and philosophical works of a pessimistic bent, he shows that the greatest horrors are not the products of our imagination. The worst and most plentiful horrors are instead to be found in reality. Mr. Ligotti's calm, but often bloodcurdling turns of phrase, evoke the dreadfulness of the human condition. Those who cannot bear the truth will pretend this is another work of fiction, but in doing so they perpetuate the conspiracy of the book's title."--Amazon.com.
A solid overview is the book Welzschmerz: Pessimism in German Philosophy
https://archive.org/details/frederick-c.-beiser-weltschmerz-...
I've been reading Zapffe a bit off and on recently which feels the most "accessible" out of the bit I've seen (I've read some Mainlander (but all the translations are very difficult and dense; I think the one I bought on Amazon is actually not as good as the one you can find on reddit, which feels more appropriately philosophically minded, or maybe the heaviness/specificity of the transliteration makes me dig/read harder than the more fluent prose of the one English version on Amazon, published the past couple years). Thacker feels a bit too light to me, but seems to be more a 'popularizer' but also abstract I wouldn't necessarily recommend him.
Ligotti's book on the topic (The Conspiracy Against the Human Race) is bleak but very well written and accessible, it's where I got the start to read more and delve into it as a philosophy.
Personally I don't find Byung-Chul Han that compelling, and maybe it's the translations. I admit I only found a sample chapter, and maybe it just dropped me in the middle where I had no context, but it felt very, as you imply, flowery and abstract.
There's a variety of pessimist writers, and I wouldn't lump them all in with this particular writer, just because you find his work empty.
There's also Anti-Natalist authors who contribute to the pessimist orientation, though I'm not listing them here as I'm not as familiar with their work, but they also have a bit of an older lineage despite it seeming like a newer orientation.
Anyways, if you seriously mean these questions and want to know, asking in a tech forum is probably not the best place, but it can point you to some good starting points, which I hope I have done.
I, personally, am pessimist to my bone, from experience. That doesn't mean people who aren't are invalid. They have a different outlook due to their experiences, and whatever constitutions they have. But I will say reading about pessimism from the heavier thinkers has allowed me to put my finger on things (even if I can't put my tongue to explain the details) in a way that I hadn't seen before, and helped me understand my own interior making.
I wasn't always like this, I was a hopeful, youthful libertarian then socialist, and while hopeful, still, I don't retain it as a likely outcome. Some people are cosmic pessimists, some are more immediate pessimists, some only see it as a personal emotive choice (that's less philosophy than state of mind) but others do see an overarching bleakness in life, despite the beauty all around. Some may even find comfort in pessimism, in known that "one day too, this(they) shall pass".
As a survival-happy species, our successes are calculated in the number of years we have extended our lives, with the reduction of suffering being only incidental to this aim. To stay alive under almost any circumstances is a sickness with us. Nothing could be more unhealthy than to “watch one’s health” as a means of stalling death. The lengths we will go as procrastinators of that last gasp only demonstrate a morbid dread of that event. By contrast, our fear of suffering is deficient.
The book is very pessimistic but that’s the point, I quite enjoyed it.
Fear and Loathing on the Campaign Trail 1972 by Hunter S. Thompson: gives a better understanding of the political contexts that led to our current politics. Somehow, we keep re-living this election over and over again.
Right now our little LLMs are passive, reactive. Prod them for results. But if the output of a prompt of some descendant ever includes a "give yourself your own tasks" subclause? We're off to the races.