The work was hard and dangerous but it was fun as well. His clients noticed his enthusiasm and would start to talk about how they themselves used to love tree climbing. Peter found out that most people quit climbing trees because it was considered a child's activity. That sounded good to Peter because children laugh and have fun. But it got him thinking that maybe there was something here about that wistful remembrance of tree-climbing days so many adults expressed.
Kids still have a blast doing it.
Older people like to feel young. He talked to some of his professional tree-climbing friends for their ideas. I'd never climb a tree unless I got paid. Clients kept reminiscing to Peter about their lost love for tree climbing. It happened too often.