I second the suggestion telling you to stop. From the way you describe your games, it sounds like you are developing some sort of addiction whether you realize it or not. I suggest you read some articles about problem gamblers and how their reasoning usually happens whenever they get a win or a loss. Keep in mind that I'm not a professional, so my reading might be off. I believe there's no harm in learning whether you have signs of addiction or not though. I've read so many problem gamblers struggle to quit even after they have no money left, which hopefully don't happen to you after this.