I am very lucky to work mostly from home (freelancer), but a decent client wanted me in their office all week.
Good God, I have new respect for office workers.
Especially in open plan offices with hot desking. Which seems to mean that all the long-term staff have bagsied a desk, and freelancers have to squeeze in to whichever workspace is empty due to its regular occupier being off site.
Today I was lent the desk of a man who is either a secret eater, or just doesn't give a fuck. I have never seen so many crumbs in a desk drawer. 
- not envy.
Also, I can't work out their etiquette for the tea-round, and definitely drank more than I made, so I think they all hate me.
I'm not asking if I'm being unreasonable, because I'm not! Companies encouraging noise and mess on the basis that it encourages collaborative working is just miserable. Ugh.