Why Do Socialists Hate Families?

Yet, Marx, Engels, and many of their modern followers are anti-family. Marx and Engels write in The Communist Manifesto:

Abolition of the family! […] On what foundation is the present family, the bourgeois family, based? On capital, on private gain. In its completely developed form, this family exists only among the bourgeoisie. But this state of things finds its complement in the practical absence of the family among the proletarians, and in public prostitution.

The bourgeois family will vanish as a matter of course when its complement vanishes, and both
will vanish with the vanishing of capital.

Do you charge us with wanting to stop the exploitation of children by their parents? To this crime
we plead guilty.

https://mises.org/wire/why-do-socialists-hate-families