Sometimes it's a "religious" issue. Some religions don't condone birth control and most are against abortions. I've known some Mormon families who were very large. They saw having children as a blessing and simply believed that God would provide for them as needed.
The reality TV show "19 Kids and Counting" was another religious family. What I really don't get is someone like Octomom!
A single woman who already had six children to begin with and chose to have in-vitro fertilization and ended up having 8 more for a total of 14! All 14 of Suleman's children were born through IVF treatments.
The 38-year-old (single mother) of 14 children (she had six before the octuplets) has been a porn actress, nude model, celebrity boxer and birth-control pitchwoman as she's struggled to support herself and her children. She's lost a home to foreclosure, teetered on the brink of bankruptcy and fought with nannies and others who tried to help her, leaving in her wake a string of publicists, lawyers and good-Samaritan types who no longer want to talk to her.
Naturally she ends up on welfare. How can society punish adults for unwise decisions without punishing innocent children?