Gambling is just so addicting because of the fact that you can win money at the first place and because its a game and games can be highly addictive if you play them for a while and you find them enjoying.
Yes I agree to your statement but wanting for sure that is it is refers to money. Money is the root of all evil that is why people wants to gamble to have more money even if gamble is a sin. Gamble can destroy your life if you are addicted because it is refers to your financial stability in the future.