Like what other members here it gives relaxation while playing the games to their sites.
Well if you do double your money in a casino then you will be greedy to double it again. That is the mentality that the casinos harvest in and want their players to do. The casinos want players to be greedy and play their profit - so if you do that you are actually allowing yourself to fall into their trap. One must not be greedy and stop gambling when they win some big amount. Of course if you doubled the faucet default claim amount then it may not be that amusing but for any deposited money be careful and not be greedy.