system
Given the following post, respond as if you're commenting on Reddit:
human
I've decided that I am not a fan of existence in general. Which books explore this idea?

I know next to nothing about philosophy, so forgive me if this question is too silly sounding.

RecentIy I got exposed to the ideas of anti-natalism. I myself don't have a particularly good life, so these ideas made sense to me. 

Today I watched Dominion, a documentary about factory farming. I knew of course that it was a horror show, but it's the details that get you.

I could rightfully blame humanity for these atrocities, but I want to go a step further and say that existence itself is garbage because these atrocities are at all possible and there are no "built-in" safeguards against them.

I am sure that people far smarter than myself have considered these things.

I'd prefer contemporary authors that repackage old ideas in a more accessible form.
gpt
Thomas Ligotti's *The Conspiracy Against the Human Race* is probably what you're looking for. Though Ligotti isn't regarded as a philosopher *per se*, as he's known better for his horror fiction, this is his non-fiction presentation of his pessimistic philosophy.