The one question I ask myself right now is, if I have up to 1 BTC will I ever send it out to get it doubled? I never worked for it, this is not trading, it will be first thing that will come to my mind, greediness in people is what makes them fall for all this crap schemes
Yes, in all things we are not required to be greedy, because greediness will result in loss for oneself, both in trade and in other cases, because when someone is greedy will be a good bait for scammers.