~snip~
The main problem is that people don't notice how much they are losing when they get some wins in between unless someone is keeping track of all their wagers and have a record of their wins and losses and then have an estimate at the end of the month or a year. But, most gamblers don't do that and only those who are responsible gamblers will keep track of their gambling activities and how much they are winning or losing in every gambling session.
So, an addicted gambler simply doesn't even know how much they are losing because they have gotten too deep into it. As you said, winning in gambling is fun and that is what addicted gamblers see only, and they don't even see that they have gambled all their money at the end of the day.
Absolutely.
That's part of how the casinos run their business. Gamblers have the idea that they can come back another day and it's like a reset, when in reality it's the same as continuing playing the same day.
The amount of money paid is what matter in the end, and some gamblers will be happy when they win $10 one day, and spend it on beers celebrating, while they lose $100 another time, and get some beers anyway to drown their sorrows.