House edge is there to protect the interest of the house much more than the interest of the gambler this is so that gamblers stand the chance to only win the amount that their luck permits them to win and most times, one needs to look out for ways to prepare your mind that winning in gambling only occurs via luck and nothing else so while gambling never expects a winning.
Yeah, it's simply an illusion that gamblers get. The illusion that they can in theory go to a casino, gamble, and become a millionaire somehow.
The reality is that most, and by most I mean the vast majority, will end up quite poor in the end, because they would have gambled away all their money.
Once a gambler stops they will realize how much money they have spent in these activities and think about what they could have invested that instead.