Most people who want to commit suicide appear to assume that it all ends at death. But it does not. Whatever hardships you are experiencing in this life will likely get worse next life if you commit suicide. The average human is born with the potential to overcome all suffering. So use this rare opportunity to reach that state. Because you might not get another chance for many a life.
Mendicants, suppose a person were to throw a yoke with a single hole into the ocean. The east wind wafts it west; the west wind wafts it east; the north wind wafts it south; and the south wind wafts it north. And there was a one-eyed turtle who popped up once every hundred years.
What do you think, mendicants? Would that one-eyed turtle still poke its neck through the hole in that yoke?”
“No, sir. Only after a very long time, sir, if ever.”
“That one-eyed turtle would poke its neck through the hole in that yoke sooner than a fool who has fallen to the underworld would be reborn as a human being, I say. Why is that? Because in that place there’s no principled or moral conduct, and no doing what is good and skillful. There they just prey on each other, preying on the weak.
And suppose that fool, after a very long time, returned to the human realm. They’d be reborn in a low class family—a family of outcastes, hunters, bamboo-workers, chariot-makers, or waste-collectors. Such families are poor, with little to eat or drink, where life is tough, and food and shelter are hard to find. And they’d be ugly, unsightly, deformed, chronically ill—one-eyed, crippled, lame, or half-paralyzed. They don’t get to have food, drink, clothes, and vehicles; garlands, perfumes, and makeup; or bed, house, and lighting. And they do bad things by way of body, speech, and mind. When their body breaks up, after death, they’re reborn in a place of loss, a bad place, the underworld, hell. - Balapanditha Sutta