How Far Do Your Cats Roam?
news.nationalgeographic.com
news.nationalgeographic.com
Even if your kitty is fixed, she's plenty destructive to the local wildlife, not to mention a disease risk when she gets in fights with raccoons and other animals that carry rabies. Dogs aren't allowed to run free, and cats shouldn't be, either.
In any case, all of those things apply to dogs, as well, but we're not allowed to let our pet dogs roam.
This drives me insane, too. We've got some neighbors who apparently refuse to neuter their cats, and therefore they tend to wander and are highly aggressive. I suspect they're also not inoculated, and more curiously in my state (of the US), all domestic animals must at least be inoculated against rabies--so if their cats were to bite someone, they could face substantial fines. I'd imagine they aren't aware of this. (They've also had a number of dogs that have turned aggressive, gotten hit by cars, and have presented themselves as a neighborhood nuisance, so it's not the animals fault... some people just shouldn't have pets).
The other problem is that I suspect they got the cats to keep local rodent populations down, but then they reason that the rodents should augment much of the cats' diets, so they feed them very infrequently (and thus, they tend to roam looking for food). According to local lore, resident snowbirds who move around for 3-6 months out of the year tend to get cats for this reason, then leave them behind when they depart for seasonal reasons under the assumption the cats will be there when they return. Often, they're not.
Sigh.
Although I don't really see the issue. Cats are really harmless and tend to stay close to home. They have been roaming free around human settlements for thousands of years.
Why does that matter? Well, cats are not always let free; sometimes they've always been there. Feral cats can be the ones that nobody has tamed yet. As for 'destructive', that's how nature works. You might prefer the doves, but the kitty has her own ideas and they're not vicious little problems, they're behaving as god intended.
Now I'm not sure if cats were native to North America, so there it might be negligence. But consider the parrots of San Francisco, living in large groups in the parks. Parrots are expensive; probably they are descended from those that escaped out an open window. Nobody intended for them to roam free, they did that on their own.
Also, count in the fact that dogs (and formerly wolves) were living in packs, but cats did not, and this is still in their genes. Dogs are used to, and more willing to obey someone considered the pack leader, while cats retained most of loner traits even after domestication.
http://www.bbc.com/news/science-environment-22567526 (animation)
http://www.bbc.com/news/science-environment-22821639 (actual article)
The accompanying documentation can be found on YouTube: https://www.youtube.com/watch?v=JPthfv1XL_w
An RFID microchip combined with a GPS collar (Pawtrack.com has a good one) may help prevent such a terrible outcome, but there are no guarantees.