Universal Truth #1 in nineteenth-century England: A rich, single man must want a wife. You have to leave the money to someone, after all.
When a single gentleman with a large fortune by the name of Bingley moves into a mansion called Netherfield Park, the news quickly spreads through the neighborhood via the neighborhood grapevine of gossipy women.
Mrs. Bennet badgers her husband about Mr. Bingley: He's so rich! He's so single! He'd make a great husband for one of our five daughters! Quick, go become best friends with him.
Mr. Bennet lets his wife do most of the talking, occasionally interjecting with some sarcastic wit such as: Well, gosh, you're so beautiful maybe Mr. Bingley will want you instead of our daughters.
Mrs. Bennet fails to realize the sarcasm.
We learn that Mrs. Bennet's only occupation in life is to get her daughters married.
We also get the impression that Mrs. Bennet is (how do we put this delicately?) really annoying.