In the sense that all thought is inherently destructive, we are nihilists simply by reason of thinking. Thinking, though, is not a permanent condition or a state of being. You don’t become a thinker, you just think as necessary. Similarly, you don’t become a nihilist, you just destroy illusions as you increase your level of perspective, rather, you increase your level of perspective by destroying your illusions. Just as we don’t continue climbing after reaching the summit, we don’t continue thinking or annihilating or detaching once the journey is done.