A leading British doctor believes that people should pass a parenting test and gain a reproduction licence before being allowed to have children, in order to be suitable parents. Parents would provide proof that they are of sufficient maturity and financial resource to take proper care of the child.
A child born to some parents is a child better not born. A child is better born later to wiser and wealthier parents.
It is very difficult to predict for certain how potential parents will adapt to parenthood, because parenting is a fundamentally new and different experience to previous life experiences, often creating substantial shifts in the parents perspectives (behaviour). A reckless teenager may become a model parent, and a model citizen (e.g. successful and well-though-of business man) may become a tirant at home.