I am also in my late 20s and have worked in situations in which I've had my own office and situations in which I had to share my office with one other person. I much prefer having my own office. I dislike the feeling of always being watched in an "open office" environment. If you can take out your headphones, why can't you call a colleague or go into her office?
I'm also not sure there's a generational difference in how "differently [people] approach and accomplish tasks."
I'm also not sure there's a generational difference in how "differently [people] approach and accomplish tasks."