other dictionary definitions include
a group of people related by blood or marriage.
all the descendants of a common ancestor
a group of people who are related to each other, such as a mother, a father, and their children:
a group of people who care about each other because they have a close relationship or shared interests
a social group of parents, children, and sometimes grandparents, uncles, aunts, and others who are related
I feel sorry for your children, if you have them, if you genuinely no longer consider them family once they move out. And your husband or wife if you have one who will cease to be family once your children move out. And your parents, who apparently ceased to be family the moment you "left the unit"
But thank you for claiming my mother, father, siblings, nieces and nephew can't possibly be my family because I'm infertile.
Interestingly the first definition I quoted was the second definition of family that the Oxford dictionary gave. The first definition, word for word, being yours. Which kind of looks like you cherry picked one of the definitions it gives to prove your point and blatantly ignored the rest that disproved your point
If you dont want to be a dick don't be a dick.