I remember standing outside after my high school graduation waiting for my family to pick me up. I noticed all the tears and sad goodbyes between friends and I simply could not think of a single person, friend or teacher, who I felt the need to say goodbye to.
Denial of emotion or rationalization of emotion is something INTPs do well. I don't really make attachments to people. There are 4 people in the world that I would feel anguish over never seeing again. Two of those people are my parents. One is a long time friend. The other is my long time boyfriend.
Ha. I can clearly remember leaving my prom before others left, to avoid all the unnecessary hugs and tears. I was thinking, what the fuck is this bullshit. But anyhow, I find myself to have perfected denial/rationalization of emotions. It became automatic, unconscious process, where all the traumas and bad experiences were just painted over with "it's ok, nothing happened" color.
I did it so well that my emotions had nowhere else to go but to burst out on the other end, through "unexplainable" depression and growing need for self-destruction. It took me about 2 years of working with a therapist to start becoming more aware of this interesting way of dealing with things. It's not that bad, but you can't go against your body forever.
I used to be very attached to my family, but when I started downgrading 3-4 years ago, lack of any understanding from their side led to detachment, and now I'm a free bird that doesn't really know where is she going. Feels good though.