I grew up in the rural South (America's Third World) (N. GA) in the late 80s / early 90s and tons of children were born out of wedlock because kids were bored and fooling around. Bored, horny kids like to have sex. Now there are so many way to occupy yourself digitally that I think these is happening less. It's not that poorer areas are dumber, it's that they had less access to entertainment and sex is free.