In fact, i basically agree with what you said. This cryptocurrency market is indeed controlled by some predators. But i still optimistic that the price of cryptocurrency will be much higher than it is now, so i still choose long-term holding.
The bitcoin users are increasing from time to time therefore I think that now it has become very difficult to control the market. The price is now already trading too much good and it is even expected that the price will continue to increase in future also, therefore long term investment is no doubt a very good idea.