I'm sorry but you don't understand cryptography or computation. The limits are physics and the laws of information. No matter how much better the computers get, your Bitcoin keys are safe for millions of years. Worry more about wrenches.
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Thats not a real argument. Tbh its childish. Given enough time the logical assumptions underpinning ECDSA can absolutely break. Even if all the quantum people are grifters (I contend they are), the fact remains that on the order of hundreds of years new computational and physics paradigms can weaken ECDSA. And it is better to have a solution ready when that happens.