I wouldn't be surprised if the rate of only child families are higher than ever.
When you do genealogical research, it's chilling to compare the sizes of families back 100+ years ago to now.
"Large" families back then meant more than 14 kids.
And you're right, these singles are hopelessly spoiled.
People had a lot of kids back then because they tended to "add value" to the family enterprise -- whether piece work or farming. Plus, kids tended to do off at a pretty regular rate.
Today, kids don't add very much value and parents tend to have as many as they can afford, which means insure they receive adequate survival skills/tools in the form of an education.