The fact that cryptocurrency is made in a computer and used in the internet gives it a big a danger to itself. It is very prone to hackers. And no one can say how long can it last over the internet. Because cryptos are also money some people are still having doubt to invest and use it because it will be easy for someone to steal it. And the transaction made by crytos are anonymous.
The same can be said about paypal, credit cards, gift cards and any medium we could use to pay online, the only problem is you cannot get your money back with bitcoin since you cannot chargeback transactions like with paypal, that is a characteristic of bitcoin I love, but that helps hackers and scammers to get away with their crimes.
In our would it stays less and less chances for privacy. Crypto currency have that kind of danger when it may be stolen and you will not find any step of the thief. But professional hackers can take away all the info about you and your wallets easy.
I would say that this is the blessing and curse for bitcoin.
Many people like bitcoin because of anonymity.
We don't like idea to pay a lot of taxes to our government, for every income we have, online or offline.
Until now, our governments could see or find everything, all our financial transactions, but with bitcoin we are finally free, and can earn without need to report and pay taxes.
But, in other hand, if anybody steal our bitcoin funds, we can't report this person or start any legal action.
It seems that we can't have everything.