The Nappied Generations

Paul, a 15 year old teenage boy, woke that morning in a soggy wet nappy, a typical wakeup for him. But he wanted two things that his mother denied him. He wanted to wear day diapers, and he wanted to wear girls' clothes. But she said no to both, which he found hypocritical since his mother wore nappies 24/7.

What exactly was her issue, and why was she still wearing them? Was it, in fact, a generational thing, that everyone wore nappies?