That's sad, I won't forget. Think of it like this, like many survivors of the first and second WW, he got married and raised a family which could very well never have been there, like many that didn't come home.
I recently read a book about 1 boy who survived Auschwitz, his entire family did not, but now...
his family counts over 60 people. I find those facts often very comforting, even somewhat triumphant