The answer is simple: those Bitcoin is not perfext. Furthermore that is the reason Numerous  Altcoin is made , For example,. Anonymity , security , faster confirmation speed or Significantly “environmental sustainability”. To example, Litecoin expects on settle on transaction affirmation much speedier over Bitcoin. Dash Also Monero are Altcoins that concentrate on the anonymity, settling on it basically incomprehensible on connect transactions for wallet clients.