I remember back in HS one of my teachers was telling us all about Prozac Nation ( I never read the book) which is about how everyone these days is depressed. She kept saying how rich and beautiful people were also depressed, and that the reason why depression rates in the Torah community are so low, is because Jews cling to Hashem's will. She said that its having a family and having kids and a warm and loving home environment that keeps people happy.
I always assumed she was right. It seemed that having a family or something else very meaningful (deeper than just a high paying job) is really what made or kept people happy. However, today I read an article Having Kids Makes You Happy. The author quoted studies which stated "that parents are about 7 percentage points less likely to report being happy than the childless" and that "Parents experience lower levels of emotional well-being, less frequent positive emotions and more frequent negative emotions than their childless peers."
Basically, parenting isn't going to make you happy. The author did say that parents were more likely to feel very fulfilled in life than non-parents, but fulfillment isn't necessarily a root to happiness.
I don't really have a point other than that one of my teachers was wrong again. Don't think your BY teacher knows anything. She probably really doesn't. Like just yesterday I decided to watch the new TV show by the creators of 7th Heaven called "The secret life of the American Teenager" The girl got pregnant her first time having sex. My friend that was over was like "Is that even possible." I looked at her as if she were an alien. then she was like "one of my teachers said its almost impossible."
Gotta love them B"Y teachers. They're so educated in those rip-off seminaries.