I guess it is because of the adrenaline that gamblings give you,the adrenaline gets even bigger when the amount is increased.I know from personal experience that when the reels of the slots are spinning your heart beats faster and the feeling of being super hooked into it is great.Unfortunately this feeling ends as soon as the money and play is over and it becomes a feeling of sadness and regret,most people only realize this when they have lost.
People have different attitudes to gambling, for some, adrenaline is important, for others, winning is important, and for others, they just like the process. So if those who like to win will lose a lot, they will stop gambling because it will not meet their requirements.
You may be right about the adrenaline, when a player risks money they get a high adrenaline rush, and they like it. Someone jumps with a parachute, someone plays gambling, these are different degrees of adrenaline. But in gambling you don’t always need to spend a lot of money, even small bets can be enough, so it may not be expensive, you just need to think carefully about whether this makes sense, or whether you can find another way to get adrenaline if you only lose in gambling.