I think i just don't want to be nothing
Contrary to the popular and stupid superstition that suicide is selfish, killing oneself is actually the most selfless act one can ever do — on
e is literally and permanently anihilating the self.
That's why it's so hard to do it. We are fully aware of this "nothingness"... and, frankly, it's quite unbearable and unpleaseant to think of it — our OWN despicable demise. It's easy to accept the demise of others, but not our own.
Even if we are rationally convinced that, overall, life is a big piece of shit not even worth beggining it, it's still very hard to let go of it... to let go of ABSOLUTELY EVERYTHING.
All we have ever done up to this point is mostly based on our self-interest. And our narcisist self can't deal with the fact that he will be no more. And — oh, boy! — he will do anything he can to manipulate everything in his way to his favour.
That's why we feel so much comfort when we try to deal with our own deaths by pretending or supposing that there will be an afterlife. It's the self trying to save himself through self-deception.
Some people believe in this illusionism... and it really can help, if you can genuinely believe It.
For the rest of us, not easily fooled, bearers of a more skeptical/scientific perspective, it's quite an agonizing experience to realize that everything will be gone for good.