And all that frustration is against the great lesson that mathematics (probability theory) teaches us, i.e. that losing streaks of any arbitral length will eventually happen with probability 1.0 for everybody if they play long enough ...
The longer you going to play eventually you will end up losing only. And this people do not understand and they wear the sunglasses of greed due to which they only sees money and at the end of the day move out of losing the money. As addicted people are the best example of how much money they lose rather than winning it.
Yeah you are right long play is not good at all. If you are winning and do not quit game at that time and continue for long time, you will definitely lose all your money back. I think a gambler should fix gambling and time limits and never accede from that level. By this way he can control his frustration. But the problem is this that gamblers are also greedy people.