Why slot machines?

Today's quote: Don't worry, Miss Bahmra. Our designs will make even these little mosquito bites look like juicy, juicy mangos!

I went to a casino with my brother today. He dragged me kicking and screaming to play some slot machines. Why do people like playing them? I can't believe he gave this machine $20 so that I could have the dubious privilege of pressing the "Spin Reels" button over and over. I looked at my brother, and said "You do know there are jobs where YOU get paid to push a button over and over?" I looked around, and saw all these old people sitting at the slots mindlessly pushing their buttons repeatedly, all the while smoking like chimneys. I guess they're lonely, and like seeing the busy life of a casino, but damn, doesn't it seem like there could be better (and less expensive) ways to spend their time?

And I can't believe my brother would play slot machines when he knows that they are a casino's biggest money maker.