The future of crypto currencies is unknown, but it is a new generation of Money which is already replacing the paper currency, especially Bitcoin been the most popular and successful among other crypto currencies so far, bitcoiners need to know that currently Bitcoin is trading low from its all time high, Bitcoin should not be viewed as a short term Investment, but should be seeing as a long term life changing investment due to its liquidity and high returns when trading high.
Bitcoin is a digital currency that has come to stay, as long as the internet stays , most persons that didn't believe in Bitcoin 10years ago regretted it, that will be also be the case for people who don't be in it now come 2034.so think positively take the risk and Investment in Bitcoin today.
I just want to correct you on something else. You said that if you mentioned that cryptocurrency is a new generation of money that is already replacing paper currency, When you say this, we are not yet at the stage where cryptocurrency has replaced paper money, so don't be fooled by what you say.
Maybe it can be said that cryptocurrency in our generation today is one of those that gives people opportunities that can be used to make money. But not to the point that paper currency has been replaced; there is no news yet that crypto has replaced paper or fiat currency.