It's how the world works which is why every culture in this world follows their paternal side. Maternal side means nothing. What you brought is irrelevant. We're talking about two different cultures coming together, the children will follow their father side in terms of lineage like their ethnicity and tribe whether you like it or not.
Please take your feminist fictitious haram shit elsewhere!
Every culture in the world? Please state your sources. I know for a fact that in many European countries it's the mother's lineage that takes precedence. In the Scandinavian countries for instance, if immigrants from two different countries have a child together, that child will be registered with the mother's ethnicity in the statistics of the immigrant population.