Ive had a lawn mowing service for around 20 years as a side job to my reg job and now that im retired i still do it but have cut it back to the point i only do 1 lawn a day every 2 weeks and they are small yards usually 1 to 2 hours a day, it gets me out of the house but still have time to do what else i want to do. Most of the yards i have now been doing the same ones for 15 + years.