Gautama Buddha on Philosophical pessimism

“Now this, bhikkhus, is the noble truth of suffering: birth is suffering, aging is suffering, illness is suffering, death is suffering; union with what is displeasing is suffering; separation from what is pleasing is suffering; not to get what one wants is suffering; in brief, the five aggregates subject to clinging are suffering.”

“Nanda, I do not extol the production of a new existence even a little bit; nor do I extol the production of a new existence for even a moment. Why? The production of a new existence is suffering. For example, even a little [bit of] vomit stinks. In the same way, Nanda, the production of a new existence, even a little bit, even for a moment, is suffering. Therefore, Nanda, whatever comprises birth, [namely] the arising of matter, its subsistence, its growth, and its emergence, the arising, subsistence, growth, and emergence of feeling, conceptualization, conditioning forces, and consciousness, [all that] is suffering. Subsistence is illness. Growth is old age and death. Therefore, Nanda, what contentment is there for one who is in the mother’s womb wishing for existence?”