Many players cannot look at it that way, especially if they win big they think that duplication is possible. I also thought that it was possible to beat the house by doubling up your bet whenever you lose, but this martingale will never work and it's proven not to work.

it's very tempting to think that you can make money from betting the idea of easily doubling your bankroll is just too tempting for many players, so they eventually turn from just wanting to have fun to trying to make a living out of it, which eventually leads to addiction.