To say there is no purpose in existence is a presupposition, which has been layered since the scholastics, where Spinoza got some of his stuff. And the scholastics got some from early Arsbian thinkers. That there is overlapping and sharing going on, somewhat masks the difference between the orientalist so with those of the occidental.
Some presumption derives its sources from hidden sources. This sharing implies an invention for later clarification, purpose sneaks in. The future is planted in a derivation of the past, in the future.
This essential derivation gives masochism a purposeful role, of setting limits to to earlier anomalies between existential, essential relations of Being. There is optimism in hoping that this derivation, is somehow related to the Western transcendental traditions. And as it turned out they did! It would be interesting to find out if there is sharing or overlap between them, and make the
Term ‘Oriental’ more inclusive and less specific than it is thought of now. In which case, purpose fullness may be said to be more reducible, and foundations to
purpose more solidly re-in(en)forced, by a will, making the contradiction lead to a shift away from negative nihilism, toward the positive aspect of the necessity of suffering.