You already have your mind made up based on your experiences and your personal reality. You probably live in an area where 911 is only minutes away, you buy your food at a market, you don't own livestock, and you really don't have to deal with dangerous animals. I challenge you, however, to consider these:
I grew up with guns, and I actually don't really like them. I don't like loud noises, BUT even I admit that they're a much-needed TOOL in some areas.
Where you live, do you occasionally encounter feral hogs? Do you KNOW what a wild sow with piglets will do to you or your dog, or how much damage a feral hog can do to pasture-land or crops over night? We've had them "plow" up five acres...and a larger herd can do more. They even come into people's yards. Yes, you can set traps for wild hogs, but they're very smart and they learn to evade them. I guess you suggest going after these animals with....? (If you don't know about the wild-hog explosion and the damage it's doing in some areas, there are documentaries on Netflix.)
Also, in your protected suburban enclave, I guess you don't have to worry about rabid or dangerous animals. You can call "animal control." For many people in rural America, THEY are animal control. In some cases, there's no way that the sheriff can respond to every hurt, aggressive, or rabid animal. The farm owner must be prepared to put down animals himself/herself. Raccoons, bats, and skunks are the most likely to carry it in our area. Some coyotes get mange to such a pitiful degree that it's better to put them down. (Some mange-denuded coyotes and foxes have been mistaken for the legendary chupacabra.) Of course, since we have ponds VERY close to our house, we have a horrible problem with water moccasins...and copperheads are a problem in the woods. Some years snakes seem to be all over the place: in the well-house, under the boat, on the porch, even under the A/C unit. In the spring you don't pick ANYTHING up carelessly. I used to be terrified for my daughter, and would check her playhouse before she went into it. We have to constantly thin out the water moccasin population or they'd take over the pond and eat our fish, as well as make life dangerous. They're pretty aggressive, and some think they own the pond. The chicken snakes/rat snakes eat our chicks and eggs, but but usually you can kill them with a hoe. We shoot the moccasins, however, as they are sunning.
Coyotes are a threat to our animals, as is the occasional bob-cat (we've lost 2 of our favorite goats this year to coyotes), but the most dangerous animals in some areas are the wild dogs and coy-dogs. These don't have the natural fear of humans that a coyote usually has, and they can really decimate young calves and smaller animals such as goats, sheep, chickens. The coyotes sometimes get bold (our neighbors had some drinking out of their in-ground pool right outside their back door), but a wild dog is even more so. We also have a few cougar in our area, but none on our farm so far. I know that in even more remote areas bear are a problem.
What do you do if you encounter a seriously injured animal? We also have to be prepared to put down hurt animals. Thankfully in our area, the sheriff DID send deputies to take care of a dog that was hit by a car in front of our farm. The poor thing's spine was crushed, legs twisted, and it was paralyzed. Most people don't have the money to take an animal like that to the vet; the rescues are full, and sometimes the animal is in so much pain it's dangerous to move it. (This was a big dog; an Anatolian mix, but he was a sweetheart. I wish we could have saved him). In our case, the deputies DID take the dog, but in some counties that's not the case. We get a LOT of dumped dogs; most are sweet and we try to find them homes, but occasionally one is aggressive.
Of course, farm owners have to be prepared to put down suffering livestock as well. There are cases where an animal is in extreme agony, and the vet may be on a call somewhere else. This happened to my pony when I was young; it tried to jump an expanse, broke at least 2 legs, and did some other really graphic damage to its face. My father was crying as he put the pony down, but that was the only merciful thing to do. A seriously injured, but otherwise healthy cow or pig can be quickly put down and the meat sometimes saved, so that the animal's death was not in vain.
And you probably never guessed that meth is a REAL problem in rural areas, did you? Yep. We had two meth labs about 3/4 of a mile from our house in one direction (they burned...not very good chemists, I suppose), and another meth lab in the other direction. The police have to have solid proof before doing anything, but that doesn't make you any safer. There's times, too, when you drive by people who are stopped on the side of the road (less common here than in my home-area); they're dealing drugs. You look straight ahead, mind your own business, and drive. There've been times when law-abiding people have had to flash a pistol...sometimes a large pistol or even a shotgun...to convince would-be attackers to mind their own business and let them pass!
And talk about women's equality! A friend of mine with a young daughter convinced a would-be burglar that he wanted to go somewhere else. When he saw her with her massive black Great Dane (the biggest teddy bear in the world, but he didn't know it) and a 12 gauge shotgun, he ran from the house yelling about a "crazy woman" with the "biggest ***** dog you ever saw!" A fairly-young widow had a similar situation, when a man came to her house late at night on the guise of "helping" her. She brought her shotgun into view and told him that she didn't need any help. Nothing quickens someone's pace more than the sound of a shotgun being racked, and even a blast into the air sometimes encourages trespassers to move along. It's like having a strong military; it's a DETERRENT to those who might want attack you.
Of course, many people still rely on guns to provide them with a deer in the freezer or even larger game (in colder regions.) Yes, hunting is a sport, but it is also still practical for some folks.
So don't judge guns from a suburban American mentality. There are still a LOT of places in the US where guns are very-much needed tools for daily safety. Again, I challenge you to present a more balanced view of the subject, and really research what life is like in areas outside of suburbia.