That's what the investors want, nobody wants an asset to stay static, developers are working hard to create values for crypto currency and yes the prices are brought out high by hype and speculators, but unrealistic or manipulated market movements are too likely when there's money involved, that's not changing when traders could be done collectively over the world
We cannot stop manipulation for now, those who have power will abuse the market, and hence it results to a more volatile price.
However, since this market is still at its early stage, there's still more chance that it will stabilize in the future and to avoid risk of losing money, we should not go against the market, we should play it safer using a HODL strategy as this works consistently especially when holding popular coins.