I work for a co-working space in London, which is like an open plan office taken to the extreme. Before that I worked in a variety of environments (I'm in my 30s), including public sector 'one-office-per-person' through to agency '3-people-per-desk' type situations, and working from home as a freelancer.
Criticisms about working space often come down to 'the garden on the other side of the fence would be easier to work in'. If you work from home, you miss having people to have coffee with at lunch. If you work in a crowded office, you miss having 2 hours of unbroken flow. So the best offices try to combine a bit of everything - quiet space, play space, etc.
Some people talk about the 'email-only' office like the Holy Grail of Offices. But it's not - it's cold, impersonal and unfriendly. It often results in unnecessary arguments resulting from people misinterpreting something. So a culture of "speak, don't write" is definitely a good thing, as long as there are some rules about when it's OK to talk to someone.
The problem is whether people respect the rules. We try to follow the headphone rule - if I'm wearing headphones, don't interrupt me unless the building is about to burn down. The corollary - if I'm not wearing headphones, feel free to walk up and talk to me.
So it's as much about culture as it is architecture, and that's something that often gets overlooked.