Photo Credit: Courtesy of Beals Alliance, Sacramento, CA
Really, it's so much easier when it's your own yard. You mow it as often as necessary, you spread fertilizer, and depending upon your location, you water it to keep it lush.
When it's not a yard but an athletic field, and when it belongs to a municipality, however, it's a different matter entirely. Field maintenance--including mowing, fertilizing, watering, and weeding--must be done on a regular schedule to keep the facility playable, but that schedule also has to work around the demands for field usage. Then there's the budget to manage, the equipment to maintain, and more.
Yes, keeping up your own yard is definitely easier. But that doesn't mean a natural field is unmanageable. It's just a matter of knowing the fields, and understanding what grows there. And when it comes time to seed or sod a new field, it's absolutely essential to have an understanding of the different varieties of grass. And there is a wide variety.