In my lifetime, I have known a few people who had riding lawn mowers. Those were mostly those who had extensive acreage to mow and who had a lot of money. Well, in Tennessee and Kentucky, I think nearly everyone who has a house must have a riding lawn mower.
People from all ages and sizes were out mowing their lawns. The lawns were well maintained, so I would bet that they mowed them at least once per week. On my travels, I was surprised to even see bulletin boards advertising riding mowers (sorry, no pics of those).
Okay, so not everyone mows the lawns (or fields as I would call these) on a riding lawn mower. This guy is helping out at the company in the previous photo.
This guy in Ohio has it right: