I agree with you on this one, even most of this gamblers who are with the right  knowledge about gamble still find it hard to let go off thier loss so easily, I'm talking about those guys whose intention is to make profit in gamble this set of people don't let go off thier loss so easily because they don't stake with what they can afford to lose when they already know the disadvantage of staking with what they can't afford to lose,  is always advised to stake with what we can afford to lose so that even if the outcome didn't work as we expected we won't think about it that much.