You mean overspending on weddings or weddings in general?
Lavish weddings are a status symbol for people.
A young couple will go into debt paying for their wedding.
Famous people spend $millions on weddings.
How about a big mansion with 10 bathrooms and 8 bedrooms and 20,000 sqft for two people? Ego.
Bill Gates has a $600 million dollar yacht built and never steps foot on it. Ego.
Guy lives in a shitty apartment but leases an $80,000 pickup truck or Tesla. Ego.
All degrees of the same ego driven behavior.