The problem is just that there are some people who are able to concentrate while lots of other people are having lots of non-related conversations around them i

The problem is just that there are some people who are able to concentrate while lots of other people are having lots of non-related conversations around them in a cafeteria (sounds like this might be you), while others can't. And the latter will prefer home office to a cafeteria or even to the usual open-plan office...