Expecting continous income from gambling is bad, that was I thought in the past, I have won in beginning, i think i will rich from gambling, but i lost , lost and lost and spent all of my salary to feed my gambling addiction. Now i could control my addiction and emotion, i won't chase what I lost in the past, just gambling for fun.
expecting an indefinite profit is what makes people use "strategies" that are "guaranteed to win" such as martingale and act so surprised when they end up busting, just to use dice as an example. people should understand that theyre gambling, and losing is a -ev game is should be expected if anything.