How are children born into poverty in the first place? How many of them are "planned" by their parent, vs how many of them are unplanned consequences of relatio

How are children born into poverty in the first place? How many of them are "planned" by their parent, vs how many of them are unplanned consequences of relationships between parents who haven't yet "settled"? I believe child poverty can be reduced significantly if the society focuses on unwanted pregnancies. Some ideas: 1. Better sex education 2. Cheap / free access to contraceptives - it can be a joint effort with some charitable organizations 3. Easy access to abortions - there will be political opposition in certain parts of the country, but I don't see who opposes it in places like Silicon Valley.