This is the way i imagine procreation in the future.Embrios obtained by fecundation in vitro, or cloning are raised in an enormous machine with many recipients containg the embrios.Each embrio has it's own recipient.The machine has a super computer that controls the conditions in every recipient to keep the embrio alive and help him develop on the 9 months period like a mother's body can do.When the embrio is mature the computer recives a signal and the new born child is taken out of the ercipient.This is a good way to make children be cause the genetical meterial and the embrio developement can be controled and the probability of the aparition of monsters or chirdren with handicaps is lower then in the nastural repoduction.With this system people can have how many childern they need to keep the population constant and the children they want and women don't need to be pregnant to have children.