Mention any aspect of gardening to anyone under 30 and you can watch their eyes glaze over.
This struck me today when I was thinking about my lovely back lawn and the ruinous activities of the mole underneath. If I were 25 I'd probably not worry at all about the mole and treat him as an unseen low maintenance pet.
Lawn maintenance also brings out the control-freak in all of us, which again develops over time.
I'd like to illustrate this concept with a couple of graphs.
On second thoughts, the above graph would be slightly different if I remove all male data from the equation: