Brattiness has more severe consequences than just annoying other people. Parents who raise a brat are far less likely to be open to a large family. They can't handle the one brat, so having 4-5 kids seems incomprehensible. They don't understand that if one's children are *raised properly*, it's quite possible to have more than one child & enjoy them, too. Brattiness is probably a major cause of our abysmally low birth rates.
It might be vice-versa.
A friend of my hubby's from work was visiting the Orlando area (when we still lived there). His wife had come along to visit her family in the area. On their last day, we all went to Disney World together. My older daughter was 4 1/2 and my younger daughter was about 1 1/2.
He and his wife had no children, but really enjoyed the day out with our family. He said that it was amazing that we could control (for lack of a better word) our children so well without yelling anything. We'd ask, and they'd respond. Apparently, his brother's method of dealing with his kids is to yell at them and accomplish little. ;)
Anyway, he honestly didn't know anyone with well-behaved children like ours, so he hadn't wanted any himself.
Two months later, his wife was pregnant. :) So, my husband told people, "Cameron's wife is pregnant, and it's all because of me." *rolling eyes*
Killing several million babies isn't helping it a lot either.