As for designer babies I'm not particularly for or against choosing the sex of a child, after all IVF is already meddling with nature and choosing the sex isn't that big a step forward (or perhaps back, maybe sideways...) but anything beyond that I would totally disagree with.
Seriously?!
There's a world of difference between IVF, which simply aids natural fertilisation because one or both of the involved parties can't manage it, and choosing the sex of a child. The results of such a policy, especially in some civilisations, would be absolutely catastrophic.
Cloning is not about having children or increasing population. It's about the ability to "create" a human being outside of the natural method for doing so, and to imbue that being with characteristics of your own choosing. The overpopulation problem will remain regardless of cloning coming to be accepted as a normal practise or not.