I don't think it is a question of having a husband as a toddler, it seems to be forgetting that you are having a baby together as equal parents. I get amazed at how the woman then becomes the 'expert' and has to be the one to tell him what to do! It is his child and he is just as capable, apart from breast feeding, and you can leave him to care for his child. I think that many women would feel very patronised if their DH never let them be alone with the baby, told them exactly what they had to do, what the baby had to wear etc and yet the man is expected to put up with it.
Of course a mature couple put their child first, it is automatic, but they don't have to have a pecking order and they are sensible enough to spend some time as a couple, rather than always being parents, and they do realise that other people can manage to babysit and this is good for the child to have loving relationships with others.
If the child has emotionally mature parents they are more likely to grow up secure than having parents who think you can measure love, have a pecking order and try and freeze other people out. Maybe it comes from insecurity.