Why do people find it necessary to share family anecdotes in the middle of class?

I really do not care if you had a learning disability in grade school and no one knew until middle school.

This was actually the question,

Dr. Sergi, do you think things are better because of more awareness? I mean I was called monster child growing up and it turned out I had a learning disability.

Keep in mind right before she raised her hand to ask the question he just said that kids who act out usually have learning disabilities and now are frequently referred for academic testing.

I get that we are studying learning disabilities as a class, but honestly the story contributed nothing to the rest of class.

I just think if people want to vent about their past experiences they should see a psychologist or do it during office hours, not waste my class time.