Clay Putnam, CGCS said: It is a misnomer to believe a turf field can pay for itself...
The only way a turf field can be justified is if the the field is multi-use, by a lot of teams.
This is the answer in a nutshell. I understand both perspectives- I work for a municipality with a gc, and many sport fields, both natural and synthetic, and I serve on the board (field coordinator) for an active rugby club with youth U8-U18, two mens teams, and a womens team.
Municipalities and school districts are installing synthetics at an astounding pace because of the ever increasing use of the fields. There simply isn't enough fields- at least in built out areas like SoCal- to accommodate all the use requests and still have decent turf. For all the issues with synthetics, primarily the heat and the abrasiveness, they are still safer than a typical beat up field that has too much use.
Example: my kid's Pop Warner has kids practicing on both natural and synthetic fields. The synthetics are brutally hot- imagine going through hell week on synthetics during typical interior SoCal August day of 100 degrees plus. They also tend to scrape you up due to the crumb rubber, but they are generally nice and cushiony, making it relatively safe on impact. The natural turf field, in contrast is hard pan bermuda, littered with bare areas and protruding rocks, and is hard as cement. While it is cooler and probably nicer to do conditioning on, once the hitting started there were numerous injuries- my kid was one of many that had a broken collar bone thanks to that nice natural turf.
Generally speaking, when a municipality puts in synthetics, it is not about cost of maintenance. It is about attempting to accommodate as many user groups as possible while still providing safe playing fields for recreation. Some may talk about cost as a justification, but that is really to appease folks worried about the upfront costs. I wish they would just tell the truth about the costs as nothing is maintenance free.
Austin you might find this interesting. When I was at UT the intramural fields were all dirt and Dr. Callahan was the turf professor at the time. He liked to play a trick on the senior turf students by making them believe the university was seeking the department's asssistance in converting the intramural fields to grass. He asked the students to get into teams and develop a complete plan for installation and maintenance. Well, after we all did this he sat us down and told us the correct answer was to install synthetic turf because the field was in use literally all day and closed after midnight. He wanted to teach us a lesson that natural turf wasn't always the answer, no matter how good we thought we were at growing it.