Many people become addicted to gambling for some reason and they do not notice and know that they will be addicted to gambling because they want to win and this is what they want. Gambling is an opportunity to make money instantly and easily because they do gambling habits that will become addicted.
You are right, many people get addicted to gambling because it is an opportunity to earn money easily. Example is, betting games, you just have to bet an amount and let the game do its job. If you are lucky, you will win big amount which is a big encouragement for many gamblers to play again and again. But getting addicted to gambling is very dangerous, it has been proven that the addiction destroys mental health and causes thinking difficulties.
Playing gambling is very exciting but we have to keep in mind that playing too much will not do any good for us.