The social class and reputation is an important aspect in the Regency Era and people were treated as per their social class. Mrs. Bennet was from a middle class family and wanted one of her daughters to marry Mr. Charles Bingley who was a wealthy social elite and may take their family a ladder up in the elite class.
Explanation:
The strictly regimented lifestyle of middle and upper class was well-defined in Regency England. Hence, the Bennets socialize witth Bingleys and Darcys from upper class but remained inferior to them and treated as inferiors. the strong presentation of class characters have implied pride and prejudice among the inhabitants of Regency era.
The Bennet sisters were women, therefore they could not be direct heirs of any inheritance or fortune left by their father and they also had no options to work for their feminine conditions, the only way for them to had a comfortable and stable life, It was to get marry with man of fortune which will take care of them, that's why Mrs. Bennet's want to meet her new neighbors because it's an opportunity.
