on this very day, many may no longer see 2017 as a great year for cryptocurrencies but to me it still is because 2017 set the record in terms all time high which has been broken to (16/12/2020). This very later part of 2020 for now appears to be the the golden time for crypto especially bitcoin.
Bitcoin hit new ATH just yesterday. I think it's a matter of perspective. indeed 2017 was the most profitable year, even for me. But for some people, that is also a bad year, because there is a lot of fraud at the ICO. I might hope that 2017 will repeat even if it's not possible, but if a year like 2017 can repeat then I hope there is a situation as well as a safer procedure for everyone.