I'm a special education teacher here in California. As a teacher, I get a lot of papers everyday. I have a filing cabinet at school and one at home. I try, for the most part, not to take work home. I just get it done at work. My home stuff would not be accessible from school. My work stuff would not be accessible from home. Plus I have an inbox at school, and at home. Plus, I have an "Inbox-Home" folder, and an "Inbox-School" folder when I find something that needs to be filed at the opposite location. I keep these files in my backpack for transfer.
I guess lots of times, I'm at school during lunch, or right after school and I want to make calls/emails, and I don't have access to my home filing cabinet, I get frustrated.