Mind of tempest
(he/him)advocate for 5e psionics
currently, my answer is that non-esistence is an unknown and it could be infinitely worse and I simply do not know this but that is just fear thus non-satisfactory.The basic idea behind the concept is "why do I continue to keep up with all this nonsense?"
Various existentialist philosophers made a career from pondering this for decades of their lives.
"If my live with all it's troubles is not part of some grand divine plan, or that plan is a bad plan, then why would continued existence be preferable to nonexistence?" In existentialist philosophy "have faith!" is not an accepted answer. A solid reason is demanded to justify enduring the troubles that are part of life. Though having rejected any supposed divine plan or higher power, those reasons have to be subjective. The existential crisis is the desire for a good answer and not having found one yet.
Though admittedly, many existentialist loved to dramatically wallow in their own pitty to get attention as suffering artists.
the problem with subjective answers is that not everyone finds them satisfactory.
or just a delight in horrible misery which tends to be when it gets dumb or funny.Grimdark is S&S taken to eleven. Its nihilism without any shred of hope. Even Conan gets his wins, his gold and his women and his glory.