I'm more in the camp that Jaybird57 is in. I don't really want to know personal things about my T, but I do find it helpful to know some things that make them more "human" to me (like why they are in the field, if they like their concentration, what kind of professional experience thay've had). I had a T that I knew stuff about because we worked in the same office, just differnet roles. It was very weird. I kept feeling the need to take care of her. Even with this T and not really knowing much about her personal life, I still struggle with taking her needs into account. I know it's my stuff, but it would be worse if I knew more about her.