Whole subdivisions of McMansions - starter castles, Hummer houses, garage Mahals - have been built over the last generation.
One of the side effects of my research on the "knowledge class" is that they seem allergic to this kind of house. Indeed, it is undoubtedly knowledge class types who invented the the term McMansion, and mostly use it pejoratively.
Yet clearly, they must be popular with a significant section of the upper middle class, or they wouldn't have been built or bought in large enough numbers to need such a pop sociology name.
So I ask readers, from your experience, what are the social characteristics of people who prefer and enjoy living in neighborhoods of houses with "a floor area over 3,000 square feet (280 m2), ceilings 9-10 feet high, a two-story portico, a front door hall with a chandelier hanging from 16-20 feet, two or more garages, several bedrooms and bathrooms, and lavish interiors." I would particularly value first-hand accounts from such happy homeowners; if you know such, please pass this query on.