How many people like an 'open floor plan'?

[spooky3]

13. Most open plan houses are open only on the first floor

And maybe a basement. Upstairs, where people sleep, there are defined spaces and private bathrooms, and a closed off laundry room.

The open first floor looks and often is larger, without too many walls. It allows flexibility in furniture arrangement. It enables the host to interact with guests and a parent to supervise kids while working in a kitchen, for example. These elements are essential if you live in a smaller home. And they work great if you live alone.

For these reasons I think this is now a classic design, not a fad, in cities, where land costs and build costs are sky high.