It is true that money should be used in day-to-day needs to be stable, and I think that bitcoin is great for savings or investments.
Fiat money is not stable, the value changes everyday, so I think the pumps and dumps is very normal in every market. Its just so happen that the volatility here in cryptoworld is very high. It is necessary for one currency to fluctuate in order for use to have an opportunity to have it just like with bitcoin.