This rally seems far different than the one of 2017. 2017 was mostly Bitcoin and Ethereum which turned out to be slow expensive systems when you started putting them to the test. Over those three years new options have been developed with lower cost, innovation into NFTs etc and faster blocks. While Bitcoin and Ethereum are still the main wealth staples these other blockchains are actually making it possible to do real world things. That's a huge change compared to 3-4 years ago and actually brings me hope that this rally wont fade this time.