The real flaws with cryptocoins(partially excluding monero and similar projects that fix some of the flaws). 1.They're not anonymous(IP addresses are exposed).

The real flaws with cryptocoins(partially excluding monero and similar projects that fix some of the flaws). 1.They're not anonymous(IP addresses are exposed). Less private than a bank(where each transaction is not viewed by every other bank user). 2.They're not providing fungibility(unlike gold), each transaction can be traced to source(via blockchain viewer). 3.They're requiring absurd amounts of electricity to generate(esp. Bitcoin which consumes enough electricity to power several countries) 4.They're not fast enough for real-time transaction and real-time finance/trade. Long confirmation times ruin potential to customer-centric interaction. 5.Volatility of value: coins depend on the market trend dictated by big spenders/owners who control vast majority of coins in a cryptocurrency. 6.Concentration of wealth: early adopters and cryptofarming facilities owners hold most of wealth(see point 5). 7.Lack of security: despite being protected by blockchain, most cryptowallets are at risk of being hacked due websites hosting them being far less secure than banks. Lots of cryptocurrency theft doesn't inspire confidence in it. 8.Limited goods market: cryptocurrency is still not adopted enough to be a worthwhile investment, majority of commercial use is for unregulated casinos, illegal goods/services, and donations.