I was the kid next door's imaginary friend.
Many divorces are not really the result of irreparable injury but involve, instead, a desire on the part of the man or woman to shatter the setup, start out from scratch alone, and make life work for them all over again. They want the risk of disaster, want to touch bottom, see where bottom is, and, coming up, to breathe the air with relief and relish again.
Animals used to provide a lowlife way to kill and get away with it, as they do still, but, more intriguingly, for some people they are an aperture through which wounds drain. The scapegoat of olden times, driven off for the bystanders sins, has become a tender thing, a running injury. There, running away is me: hurt it and you are hurting me.