The reason why gambling is so addictive is because gambling gives a thrill that we never expect, especially when excitement is coming. In betting, they give a happiness when you are winning. And when you encounter the losing you want to back your money, that why you will addictive to gambling.
The addiction can be trigger if you are feeling happy in you habits.. but if you are losing and turn you mad its not an addiction.. i think those who are wanting to recover their loses they are thinking to get back but its not a addiction and i think they are angry why they are losing a lot of money in gambling..