The reason is simple; it will keep away the speculators who understand neither bitcoin nor the principles of speculation.

Speculation is mostly about stellar risk management and knowing when and how to take profits. People who change their opinions by day to day (or hour to hour) fluctuations and are swayed by headlines will never learn these principles.

I am getting tired of seeing people liquidate all their investments and invest them into the X new big thing. A new generation of fools come around every 3-5 years. Their opinions change faster than their under-garments and their risk management skills are slow to evolve.

The benefit in keeping them away is simple, lesser volatility. BTC is in desperate need of THAT for its sustainability.

I say we need more vocal naysayers to keep these speculators away, at the same time the believers can work on developing the marketplace and make it sustainable.