Well in my opinion, I think cryptocurrencies as our future depends on its performances. There are a lot of it in the market nowadays and if they do good and become better and be stable, I guess it can considere as our future. As for becoming rich if we hold many, I suggest don't hold it too long. You must invest it in order for it to grow that can give you a huge income or profit and be smart in planing, making, and doing strategies.