However, even with this knowledge, Slot Machine play is one of the most popular forms of gambling in the world and is potentially the most harmful and addictive. They contribute to more problem gambling and addictive behaviour than any other gambling activity.
So, just the excitement of almost winning can be just as pleasurable as actually winning. This effect increases the desire to keep playing and may also be associated with a gambling addiction. Although the near-miss trick might not work on everyone, it could strongly affect people suffering from pathological gambling.