Why is someone get addicted to gambling once he gamble ?
I don't think one would get addicted to gambling once he gamble. I do gamble and not addicted to it. One becomes addicted when greed and emotions overtakes his mindset.
Not all of the gamblers out there are like you that can control greed and emotion when playing gambling, most of the gamblers are addicted in gambling because they are the exact opposite of you. Addiction in gambling not only comes because of your greed or emotions, sometimes you continue on playing gambling because you made a choice, a choice that you won't stop until you make profits on it.
A very bad choice though. Another one is that when you won big in gambling, there is no way on stopping instantly, because you think you are going to win again, so you continue even though you are losing most of the time.