What does a rich older couple do in 7500sq ft/700sq m? I'd run out of ideas for rooms after about 200 sq m, and then I'm left to clean the remaining 500 sq m. anyway...
Yet, it's cheaper to live in the empty house than renting something smaller or getting into a elder facility care house.
obviously they hire people to maintain the place.
To be honest, I didn't even need 700 sq m to raise kids in. Some people are just so rich that enormous homes like that make sense to them. But then they are so out of touch that they don't realize that very few people even want lives like that.
It's tough for me to imagine using that much space, it's just going to accumulate dust. But then again, the people building houses that big probably just hire someone to dust it for them.
It's easier for some people to blame others and hold on to nostalgic knick-knacks, then maintain good relationships.
Tools
So much making could be done. I'm in a ~4000sqft home right now and all I really want is a workshop with and office. I'd downsize to almost nothing if I could detach from the house and do stuff and thing.
2. As a status symbol
3. If you have kids (and grand kids), you want a place to host them all at the same time (and this location happens to be popular with the kids...)
They eventually came to the realization that they want a smaller place though...