They won't do it willingly. That just means it will happen without their input.
the ideal family has two full-time working parents, paying a mortgage and car loans, consuming as many high-margin domestic products as possible, rearing as many children (future laborers and consumers) as possible, with little to no assistance from the state. and you simply can't have that by force. if you could, you might as well drop the pretense and openly treat your population as slaves.