The only sensible ends of literature are, first, the pleasurable toil of writing; second, the gratification of one's family and friends; and lastly, the solid cash. ↗
People repeat behaviour that leads to flooding their brains with pleasurable chemicals. The short-term reward loop acts over hours to years, and the long-term reproductive success loop over generations. ↗
When I got a lap dance, because I was 17, they had to put a massive pillow between me and the girl when she was grinding me. It was weird, yet pleasurable. ↗
We're basically after Joe's beer money, and Joe likes his beer, so you better make sure that what you give him is at least as pleasurable to him as having his six-pack of beer would be. ↗