Well, my simplified definition is a gambler on the financial markets - one who bets on price fluctuations. Although I'm not a financial expert, after some think

Well, my simplified definition is a gambler on the financial markets - one who bets on price fluctuations. Although I'm not a financial expert, after some thinking, maybe speculators help market liquidity (at times), but I still think that they are parasitic market participants. In Bitcoin, they drive price volatility, and this way hurt its adoption, and make it less suitable as a transactional currency.