I had two chihuahuas for a long time -- two littermates I adopted as little pups. They were very lovable and insanely cute little ones. My boy was very protective of me and his sister, and was super-affectionate; my girl was sweet tempered and friendlier, and liked to lift her leg when she peed. I think chihuahuas are wonderful dogs. I didn't treat them like fashion accessories or toys. They helped me feel at home and more content, being someone who has lived by himself for a long time. They fit into New York City-size apartments beautifully.
People have all sorts of silly biases and judgments about different breeds or mixes of dogs, and dogs can be all over the map with how well they interact with adult humans, children, other dogs of different sizes, cats, etc. I used to have idiots insult my dogs while walking them by saying snide, stupid things like "Look! Rats on leashes!" If there were any moments I might have been sociopathic, it was when people dissed them like this. 
_________________
"I could have been wild and I could have been free
But nature played this trick on me..."
? the Smiths