Where's the motivation for concluding that there are infinitely many unique infinite cardinal numbers?(adsbygoogle = window.adsbygoogle || []).push({});

I understand the proof for it and accept it, but what other useful implications of this can be drawn in mathematics? It almost seems like Cantor developed this idea in set theory just to say he developed something. It reminds me of the topic of fuzzy logic, sure its a well written idea, and even sort of cool, but where's the usefulness and potential?

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# Where's the motivation

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