>>8899962>>8899972A. The overwhelming majority of people don't teach their dogs to do anything useful. It's a moot point.
B. A sizable amount of people own dog breeds that are so terribly mutated they -can't- do anything useful (even most "working dog" breeds have been mutated and fucked up in the modern era by things like hip dysplasia).
C. Cats may not be nearly as versatile in what they can do, but they are very effective in one role: catching vermin. And you can more or less pick up any random cat and it'll be useful in that role. The majority of dogs are useless at doing anything except shitting on the sidewalk unless explicitly taught to do so.
D. The likelihood that a dog will protect you from an attacker is greatly overstated. Even an ostensibly 'loyal' dog is likely to just run away--ironically, a shitty rat creature like a chihuahua is significantly more likely to protect you than the average dog. Saying that barking & then running away is 'protecting you' is fucking dumb, and let's be real, most dog owners think their dog will physically protect them. Also, it's by no means common, but there have been some instances of cats protecting children or their owner.
E. Stray cats may be more disruptive to the natural environment, but stray dogs are 100x more disruptive to human environments. From barking loudly like niggers to shitting all over like niggers to randomly attacking people like niggers, they're far more of a nuisance.
F. On that note, dogs are pretty much the one singular animal people own that are a fucking nuisance in general. It only takes one faggot barking dog to ruin an entire street or apartment block. Even if you're a good owner (hint: the majority of dog owners aren't) and discipline your dog to not bark, chances are it's going to wail and scream for hours every time you leave the house. And most dog owners are so far up their own ass about their "furbabies" that they'll take offense if you dare bring this up to them.