I had a dog for decades (not the same).
The trend of dog craziness of some people in the last 5-10 years belongs to a specific psychiatric situation (depression, personality disorder, OCD?). On the other side many, mostly childless, women feel some kind of loneliness and adopt a dog. The dynamics of pet love has many paths.
>On the other side many, mostly childless, women feel some kind of loneliness and adopt a dog.
Back in "the day" these people would get into crappy marriages and pop out a few kids before ultimately getting divorced or just be single moms. While it's nice that they're not doing that I think the more interesting angle is the picture of how the economic reality has changed over the generations.