Comment Re:Why is slashdot posting these garbage articles? (Score 1) 152
I think you're right as far adults go -- adults are having fewer children because children are unaffordable.
Teens, OTOH, were almost never making a conscious decision to try to conceive children anyway -- if they got pregnant, that was an unintended side effect of having recreational sex. So if the teenage fertility rate is falling, the most likely explanation is that teens are either having less sex, or they are using contraception more effectively (or both). It's quite plausible that teens are simply spending less time in each others' physical proximity, and therefore having sex with each other less often.