Try reading the original post again. These are other dogs we encounter on walks. I'm not seeking them out. I'm taking my dog out; I'm talking about people that don't control their own dogs and let them run at mine.
I don't have a yard. I walk my dog. There are other dogs in the world. I suppose I could lock her in a 900 sqft condo for the rest of her life though so she never sees another dog.