I now work on saturdays, but its working in a bookshop, so its like a holiday for me. People wander around the store looking for books, occasionally buying them, it doesnt even really feel like work. I dont go round haranguing people saying YOU MUST BUY THIS BOOK. If they come in and dont buy anything thats ok, its their choice. My boss probably doesnt like that but he cant always guess what books people really want to buy as everyone is different.
its not the same as working in a library, where the books actually come back after people have read them.