The world of technology is evolving every year what if in future a new tech is been born that can kill crypto or works better than crypto won't this kill cryptocurrencies?
Also I heard that super computers can get through all crypto wallet keys easily in a matter of days, true or false?
For now, this is just a theory and speculation, although we have records of people speculating that Bitcoin and Cryptocurrency will be obsolete but, it turns out the other way around, for something that can kill or make Cryptocurrency to go obsolete, we have to know what is it and what makes it better, adoption and enhancement of Cryptocurrency will continue as long as the so-called something that can kill Crypto does not have a concrete idea on what it will be.