Most of the people are coming back to gambling for the same reason of east and fast money. But very less people get that chance to win money in gambling and also they may again lose back to the site in the hunt for more and more profits. I usually just gamble with some fixed amount and will stop after some time whether I lose or win. But until now never win big amounts in gambling.
Only out of gambling addiction gamblers are keep on coming back even they are facing continuous losses. When you are gambling with fixed bankroll you may limit your activity of the day not your future gambling plans.