The therapist is a human being. I can't imagine how anyone could restrict their life as to never been seen in the world outside their office.

I saw my T in a restaurant with her family once, she and I stood in line and chatted. It was a nice interaction and it made her more relatable to me. I also have met people who know her from her previous job, as a friend. Though we don't' talk about her, it's a friendly reminder that this person is a human being with their own life.

I think it's good to be exposed to some 'real world' aspects of T because if a client builds up some superhuman image of their therapist, they're bound to be disappointed eventually. Dealing with actual human beings is one of the main points in therapy, IMO.