Like so many others have said, I love all dogs, period. Would I have them as pets? No. But that doesn't mean that I don't like every dog that crosses my path. I rarely blame a dog for bad behavior. Heck, I have my own issue here, right in my own home, with a purebred English Bulldog that I love to pieces, but he is a tyrant and causes problems with my two other dogs.
I love my Goldens, best of all, to tell you the truth, and like Staci and others, it bothers me when people say they are "overbred" or don't like them. My experience with Goldens and Labs has been wonderful! Honey came from a backyard breeder, before I knew better, but would I trade her? No way!!! She's been with us for over 9 years now. We love her to death. Yes, the Lab I had as a puppy was a wild man, but he was a GREAT dog, and I loved him to pieces. And because I am one who will probably always have multiple dogs, I think Goldens and Labrador Retrievers fit my lifestyle. My English Bulldog needs to be an only dog. He won't be, but he needs to be, so I won't be seeking out any other English Bulldogs for our family.
Will I ever own a smaller dog? Maybe. I loved my Cocker Spaniel, Kaycee, to pieces. She was a wonderful addition to our family. She joined us when she was 7 years old, and we had her for 5 years. She was very special. But I'm not inclined to have dogs that have lots of grooming requirements, though, therefore I probably won't have another Cocker Spaniel.
It is interesting to know how you all feel about other breeds, as long as we can keep it civil.
I'm going to answer the original question, knowing that I will probably make someone mad, but I'm answering it, anyway. I would not own:
Pit Bulls: the risk is just too great for me, with children, cats and other dogs, but I admire those who have embraced these dogs and I have read so many, many success stories about them.
Chihuahuas: too small. I worry that they might be injured by our cat or other dogs. They are darling, just not suitable for our situation.
I LOVE Bichons and if I got a smaller dog, that's probably the direction I would go in. But again, there is a grooming issue, so I wouldn't go that direction.
I guess I'm destined to have BIG, Hairy dogs that love me. Every Golden Retriever I have encountered is easy to manage, easy to love. It is definitely my breed of choice, rescue, purebred, etc.