Where I currently am (I'm a consultant, based mostly in various client offices), the floor has a lot of flex in it. When people walk past, I can feel it bouncing under my chair.
We do have decent-sized desks, so the open plan isn't too bad. It's actually pretty good as these things go, although there are no kitchens in which one can make a proper cup of tea.
No proper kitchens for tea-making.
We're in England.
Come on!
Admittedly this is a German company I'm working with at the moment, but still, the office is full of Brits.
Open plan is perfectly normal here, but I still hate it. Especially the ones where they put really loud people near you (but you can't make a seating plan based on how loudly people tend to talk), or when there are people whose jobs involve loads of phone calls and who shout down their headsets, in the same open plan space as a highly technical team who really need to concentrate and occasionally have a quiet conversation with each other.
No one space works for everyone. It just doesn't. And that's not even taking into account personal variations, as we've seen from these comments some people like the open collaborative possibility and some feel the need to hide away and bash the keyboard for hours at a time.
I have days when I want to do one, and days for the other, so I really don't know what kind of office I'd like!