I don't free range because I like my garden.
I don't free range because we share the property with my sister-in-law who would be FURIOUS if my chickens ate her beloved flowers and dug the mulch out of her carefully-tended beds.
I would be very upset to have someone else's chickens wandering into my yard to damage my garden and my SIL's flowerbeds even "only" once a month.
Not to mention the possibility that they might bring disease to my flock or that a neighbor's rooster might fight my roosters or try to lure my hens into his flock.