Great photo, Gromit. So much personal information; family, home, scale of relationship, love, - it's so intimate, it feels like an intrusion. Great photograph that will become stronger as the years pass. A real treasure and in my view, the glimpse of background story and the bravery of something so personal is what makes this art.
It's also a comment on what it is to have children vs. what it is to not, so it's social comment too. It's all in that photo and the more you consider it, the more powerful it becomes.